Mary Pennington,US bacteriologist

Numéro d’image : 11587690
Mary Pennington,US bacteriologist
Mary Engle Pennington (1872-1951),US bacteriologist and food preservation pioneer. Pennington studied chemistry at school,and despite opposition she studied at the University of Pennsylvania and obtained her PhD in 1895. From 1904 she worked in bacteriological chemistry and improved standards in food hygiene. From 1907,she was Chief of the Food Research Laboratory. She is a member of the USA's Women's Hall of Fame. This photograph dates from between 1905 and 1945. It is from the Harris and Ewing Collection,which mostly consists of photographs taken in Washington DC,USA
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Crédit: Science Photo Library / Library of Congress
Taille de l’image : 3754 px × 4724 px
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