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6 résultats pour : early 1900s men in laboratory

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Two men sitting in what the original caption calls a laboratory
UMG22A54_454

Two men sitting in what the original caption calls...

Men working at a general analytical laboratory, ... Union Sugar Co. Betteravia, CA ca. 1909
UMG22A13_333

Men working at a general analytical laboratory, .....

Men and laboratory examining animal cages
UMG22A02_353

Men and laboratory examining animal cages

Cleaning animal cages
UMG22A03_020

Cleaning animal cages

Providence Hospital Laboratory
UMG22A02_291

Providence Hospital Laboratory

Men working in a Laboratory in the Philippines
UMG22A03_011

Men working in a Laboratory in the Philippines