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Mining development of the German colonies in Africa
UMG23A36_300

Mining development of the German colonies in Afric...

Mining
UMG21A12_295

Mining

Inside a mine
UMG21A09_263

Inside a mine

Mining
UMG21A12_296

Mining

Scenic Railway at the coal face
UMG21A09_376

Scenic Railway at the coal face

Neu-Staßfurt salt mine
UMG21A09_254

Neu-Staßfurt salt mine

The Chemical Laboratory of the University of Berlin
UMG21A10_028

The Chemical Laboratory of the University of Berli...

Mining
UMG21A12_278

Mining

Mining
UMG21A12_277

Mining

Machine for splitting firewood / Maschine zum Holzspalten
UMG20B50_414

Machine for splitting firewood / Maschine zum Ho...

Digital improved reproduction
UMG20B46_006

Digital improved reproduction

Digital improved reproduction
UMG20B46_005

Digital improved reproduction