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Cornelis Wiersma with unidentified woman in lab
Interior of the Earhart Plant Physiological Lab
Chester Stock
Cornelis Wiersma
Close-up of hands and lab apparatus
Sterling and Mary Emerson
Cornelis Wiersma
Sterling Emerson
Don Yost
Cornelis Wiersma with unidentified woman in lab
Henry Borsook with Warburg respiration apparatus
Ernest Swift
Cornelis Wiersma
Biology lab
Don Yost
Sterling Emerson at drawing board
Sterling and Mary Emerson
Oliver Wulf
Sterling and Mary Emerson
Cornelis Wiersma with unidentified woman in lab