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2 results for: thin pale irregular squiggly lines

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Six microscope images of bacteria and bacilli, page, photomechanical print, number: 'Tafel I.',
LZT26B09_288

Six microscope images of bacteria and bacilli, pag...

Three images of electrical discharges, page, photomechanical print, inscription: 'Fig. 43. -
LZT26A78_302

Three images of electrical discharges, page, photo...