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School system, university, teachers and scholars, Mexico, around 1900, illustration, reproduction

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School system, university, teachers and scholars, ...

Professor standing and delivering a scientific lecture on human brain anatomy and neurological

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Professor standing and delivering a scientific lec...

Historian and university professor Dr Oswald Seidensticker (1825–1894) . A leading figure in the

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Historian and university professor Dr Oswald Seide...

Ernst Heinrich Philipp August Haeckel, 1834 – 1919, German zoologist, naturalist, eugenicist,

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Ernst Heinrich Philipp August Haeckel, 1834 – 1919...

John Tyndall, 1820 –1893, Irish physicist and chemist, discoverer oft he greenhouse effect,

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John Tyndall, 1820 –1893, Irish physicist and chem...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, digitally edited

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, digitally edited after

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

Wilhelm Conrad Röntgen photographed by Erwin Hanfstaengl, 1899, Germany Wilhelm Conrad Röntgen (27.

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Wilhelm Conrad Röntgen photographed by Erwin Hanfs...

Professor providing individualized assistance and mentorship to a young university student in a

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Professor providing individualized assistance and ...

Teacher standing by a male student's desk, assisting him with his work, while other students are

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Teacher standing by a male student's desk, assisti...

Exterior view of the École de Droit, Faculty of Law, in Paris. Exam in the boardroom, a student

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Exterior view of the École de Droit, Faculty of La...

University students attending a biology lesson, actively observing and discussing a human skeleton

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University students attending a biology lesson, ac...

Professor interacting with diverse students in a bright school classroom, helping a young woman

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Professor interacting with diverse students in a b...

Professor actively engaging with diverse university students in a modern classroom, fostering an

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Professor actively engaging with diverse universit...

Professor giving an engaging university lecture to attentive students in a modern classroom, taking

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Professor giving an engaging university lecture to...

Professor explaining human anatomy to university students using an x ray image of a pelvic bone on

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Professor explaining human anatomy to university s...

Happy university students in a modern classroom actively listening and engaging with the lecturer,

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Happy university students in a modern classroom ac...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, digitally edited

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

John Tyndall, 1820 –1893, Irish physicist and chemist, discoverer oft he greenhouse effect,

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John Tyndall, 1820 –1893, Irish physicist and chem...

Healthcare professor giving a lecture to a group of young students and remote attendees in an e

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Healthcare professor giving a lecture to a group o...

Robert Lowth 1710, 1787 Bishop of the Church of England and Professor of Poetry at Oxford

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Robert Lowth 1710, 1787 Bishop of the Church of En...

Marcantonio Sabellico, Antonio Sabellico, Latinised Marcus Antonius Sabellicus, actually Coccio,

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Marcantonio Sabellico, Antonio Sabellico, Latinise...

Telegraphs by Professor Michael Glösener, International Exhibition of 1862, London, UK

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Telegraphs by Professor Michael Glösener, Internat...

Chemical laboratory, 1886, Justus von Liebig, 1803 - 1873, German chemist and professor, Gießen,

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Chemical laboratory, 1886, Justus von Liebig, 1803...

Professor Henrik Steffens inspires his listeners with enthusiasm for the Wars of Liberation,

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Professor Henrik Steffens inspires his listeners w...

Teacher leads virtual class, pointing to large interactive screen displaying a grid of remote

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Teacher leads virtual class, pointing to large int...

John Tyndall, 1820 –1893, Irish physicist and chemist, discoverer oft he greenhouse effect,

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John Tyndall, 1820 –1893, Irish physicist and chem...

John Tyndall, 1820 –1893, Irish physicist and chemist, discoverer oft he greenhouse effect,

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John Tyndall, 1820 –1893, Irish physicist and chem...

Ernst Heinrich Philipp August Haeckel, 1834 – 1919, a German zoologist, naturalist

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Ernst Heinrich Philipp August Haeckel, 1834 – 1919...

Young professional woman wearing glasses and a lanyard, holding a folder while standing confidently

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Young professional woman wearing glasses and a lan...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, father of the fertilizer

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

Theodor Vernaleken (born 28 January 1812 in Volkmarsen, died 27 February 1907 in Graz) was a German

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Theodor Vernaleken (born 28 January 1812 in Volkma...

Karl Ludwig Meißner, since 10 March 1866 Karl Ludwig Ritter von Meißner (born 7 June 1809 in

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Karl Ludwig Meißner, since 10 March 1866 Karl Ludw...

Medical professional in scrubs pointing to a large screen displaying an x ray of the human spine

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Medical professional in scrubs pointing to a large...

John Tyndall, 1820 –1893, Irish physicist and chemist, discoverer oft he greenhouse effect,

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John Tyndall, 1820 –1893, Irish physicist and chem...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, father of the fertilizer

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, digitally edited after

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

Ornamental apple (Malus 'Professor Sprenger'), Anchers Havecenter, Ditfurt, Saxony-Anhalt, Germany

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Ornamental apple (Malus 'Professor Sprenger'), Anc...

Richard Ludwig Höchsmann, (since 1872) Ritter von Hannathal (born 22 August 1802 in Olomouc, died 2

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Richard Ludwig Höchsmann, (since 1872) Ritter von ...

Dominik Waidele (1771-1830) Professor of Surgery in Olomouc, Historical, digitally restored

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Dominik Waidele (1771-1830) Professor of Surgery i...

Happy college student explaining lesson at whiteboard while professor and classmates applaud him in

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Happy college student explaining lesson at whitebo...

Justus Freiherr von Liebig, German chemist and scientist, digitally edited, in his laboratory at

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Justus Freiherr von Liebig, German chemist and sci...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, father of the fertilizer

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, digitally edited

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

John Tyndall, 1820 –1893, Irish physicist and chemist, discoverer oft he greenhouse effect,

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John Tyndall, 1820 –1893, Irish physicist and chem...

Thomas Chalmers, 1780 – 1847, a Scottish minister, political economist

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Thomas Chalmers, 1780 – 1847, a Scottish minister,...

Celio Secondo Curione, 1503 – 1569, Italian humanist and historian

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Celio Secondo Curione, 1503 – 1569, Italian humani...

Giovanni Battista Adriani, 1511 or 1513 – 1579, an Italian historian

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Giovanni Battista Adriani, 1511 or 1513 – 1579, an...

Portrait of Sebastian Brant, humanist, lawyer, professor of law, University of Basel, humanism,

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Portrait of Sebastian Brant, humanist, lawyer, pro...

John Tyndall, 1820 –1893, Irish physicist and chemist, discoverer oft he greenhouse effect,

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John Tyndall, 1820 –1893, Irish physicist and chem...

John Tyndall, 1820 –1893, Irish physicist and chemist, discoverer oft he greenhouse effect,

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John Tyndall, 1820 –1893, Irish physicist and chem...

Zoologists at the University of Jena. In the middle the university lecturer Ernst Häckel, 1876

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Zoologists at the University of Jena. In the middl...

John Tyndall, 1820 –1893, Irish physicist and chemist, discoverer oft he greenhouse effect,

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John Tyndall, 1820 –1893, Irish physicist and chem...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, digitally edited

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, digitally edited

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

Marie-Louis-Antoine-Gaston Boissier, 1823 – 1908, French classical scholar

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Marie-Louis-Antoine-Gaston Boissier, 1823 – 1908, ...

Isaac Barrow (born October 1630 in London died 4 May 1677) was an English clergyman, scholar and

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Isaac Barrow (born October 1630 in London died 4 M...

Der Minerva-Ballon, entworfen von Etienne Gaspard Robert (1763-1837), belgischer Bühnenmagier,

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Der Minerva-Ballon, entworfen von Etienne Gaspard ...

Josef Ladislav Jandera, OPraem (German Joseph Ladislaus Jandera, * 19 February 1776 in Horschitz,

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Josef Ladislav Jandera, OPraem (German Joseph Ladi...

Johann Friedrich Dieffenbach (born 1 February 1792 in Königsberg i. Pr., died 11 November 1847 in

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Johann Friedrich Dieffenbach (born 1 February 1792...

Thomas Thomson (1773-1852) Scottish chemist, born in Creiff, Perthshire, pupil of Joseph Black,

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Thomas Thomson (1773-1852) Scottish chemist, born ...

Johann Gottlieb Fichte giving a presentation, philosopher, educator, professor of philosophy,

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Johann Gottlieb Fichte giving a presentation, phil...

Chronoscopes by Professor Michael Glösener, Great London Exposition, 1862

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Chronoscopes by Professor Michael Glösener, Great ...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, digitally edited

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

John Tyndall, 1820 –1893, Irish physicist and chemist, discoverer oft he greenhouse effect,

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John Tyndall, 1820 –1893, Irish physicist and chem...

John Tyndall, 1820 –1893, Irish physicist and chemist, discoverer oft he greenhouse effect,

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John Tyndall, 1820 –1893, Irish physicist and chem...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, father of the fertilizer

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, digitally edited

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

Experienced businessman and professor in a suit stands confidently with clipboard, gazing at camera

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Experienced businessman and professor in a suit st...

Karl Heidler, since 1856 Knight Heidler von Egeregg (born 23 December 1809 in Falkenau an der Eger,

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Karl Heidler, since 1856 Knight Heidler von Egereg...

China in 1898, schoolmaster, teacher teaching the theories of Confucius, illustration, reproduction

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China in 1898, schoolmaster, teacher teaching the ...

William Graham Sumner (1840-1910), American sociologist, economist and protagonist of social

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William Graham Sumner (1840-1910), American sociol...

Wolfgang Musculus, Musslin or Meusslin, 1497-1563, German scholar and leader of the Protestant

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Wolfgang Musculus, Musslin or Meusslin, 1497-1563,...

Georg Kurzbauer (1812-1878), Professor at the Imperial-Royal Technical College and the Vienna

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Georg Kurzbauer (1812-1878), Professor at the Impe...

Benjamin Smith Barton (born 10 February 1766 in Lancaster died 19 December 1815 in New York) was an

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Benjamin Smith Barton (born 10 February 1766 in La...

A dedicated Asian Muslim teacher with a hijab explains complex concepts to her students using a

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A dedicated Asian Muslim teacher with a hijab expl...

Claudius Chervin, born 3 August 1824, died 23 December 1896, was a French educator and therapist. A

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Claudius Chervin, born 3 August 1824, died 23 Dece...

Emanuel Stephan Schroff (1799-1853), professor of theoretical medicine, staff surgeon, Historical,

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Emanuel Stephan Schroff (1799-1853), professor of ...

Robert J. Jameson (1774-1854) Scottish mineralogist, born in Leith, the seaport of Edinburgh,

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Robert J. Jameson (1774-1854) Scottish mineralogis...

Friedrich Peithner von Lichtenfels (1795-1854), Dr med. Professor of Obstetrics in Vienna,

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Friedrich Peithner von Lichtenfels (1795-1854), Dr...

Female professor assisting a smiling student with her exam paper in a classroom full of diverse

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Female professor assisting a smiling student with ...

University professor holding clipboard supervising group of students using tablet and laptop

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University professor holding clipboard supervising...

Elisha Mitchell (1793-1857) American naturalist and explorer. Professor of chemistry, mineralogy

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Elisha Mitchell (1793-1857) American naturalist an...

University professor explaining a mathematical function to students, writing on a whiteboard in a

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University professor explaining a mathematical fun...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, father of the fertilizer

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

John Tyndall, 1820 –1893, Irish physicist and chemist, discoverer oft he greenhouse effect,

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John Tyndall, 1820 –1893, Irish physicist and chem...

Benjamin Silliman, 1779 – 1864, American chemist and science educator

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Benjamin Silliman, 1779 – 1864, American chemist a...

John Tyndall, 1820 –1893, Irish physicist and chemist, discoverer oft he greenhouse effect,

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John Tyndall, 1820 –1893, Irish physicist and chem...

Justus Freiherr von Liebig, 1803 – 1873, German chemist and scientist, digitally edited

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Justus Freiherr von Liebig, 1803 – 1873, German ch...

Dino Rosoni, or Dino del Mugello, c. 1253 – c. 1303, Italian jurist

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Dino Rosoni, or Dino del Mugello, c. 1253 – c. 130...

Sir James Young Simpson, 1st Baronet, 1811 – 1870, a Scottish obstetrician and physician

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Sir James Young Simpson, 1st Baronet, 1811 – 1870,...

Portait of Georg Christoph Lichtenberg, 1742 - 1799, a German scientist, satirist and Anglophile,

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Portait of Georg Christoph Lichtenberg, 1742 - 179...

Robert Bellarmine, 1542 – 1621, an Italian Jesuit and a cardinal of the Catholic Church

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Robert Bellarmine, 1542 – 1621, an Italian Jesuit ...

Ernst Julius Hähnel (born 9 March 1811 in Dresden, died 22 May 1891) was a German sculptor and

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Ernst Julius Hähnel (born 9 March 1811 in Dresden,...

Arnold Böcklin (born 16 October 1827, died January 1901), Swiss painter, draughtsman, graphic

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Arnold Böcklin (born 16 October 1827, died January...

Justus von Liebig, 1803 - 1873, a German chemist and professor

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Justus von Liebig, 1803 - 1873, a German chemist a...

Thomas Chalmers, 1780 - 1847, a Scottish minister, professor of theology

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Thomas Chalmers, 1780 - 1847, a Scottish minister,...

Friedrich Carl von Savigny (1779-1861) was a German professor and jurist. He is one of the most

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Friedrich Carl von Savigny (1779-1861) was a Germa...

Conference in the House of Lords in Vienna, Austria, Professor Arndts, Cardinal Rauscher, Cardinal

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Conference in the House of Lords in Vienna, Austri...

Joseph Skoda, 1805 - 1881, Czech doctor, professor of medicine and dermatologist/ Joseph Skoda,

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Joseph Skoda, 1805 - 1881, Czech doctor, professor...

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