190109 Cahan 5531

UNL History professor, David Cahan holds a copy of the biography he authored, "Helmholtz: A Life in Science.", January 9 2019. Photo by Gregory Nathan/University Communication.
Title:
190109 Cahan 5531 (permalink)
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Caption: 
UNL History professor, David Cahan holds a copy of the biography he authored, "Helmholtz: A Life in Science.", January 9 2019. Photo by Gregory Nathan/University Communication.