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Cornelis Wiersma with unidentified woman in lab
Interior of the Earhart Plant Physiological Lab
Cornelis Wiersma
Close-up of hands and lab apparatus
Cornelis Wiersma
Sterling Emerson
Cornelis Wiersma with unidentified woman in lab
Henry Borsook with Warburg respiration apparatus
Biology lab
Sterling Emerson at drawing board
Cornelis Wiersma with unidentified woman in lab