Image: CalhounJ
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Description: Джон Кэлхун проводит эксперимент с крысами
Title: CalhounJ
Credit: http://www.pubmedcentral.nih.gov/picrender.fcgi?artid=1644264&blobtype=pdf. Work republished by NIH Original source: John Calhoun "Death Squared: The Explosive Growth and Demise of a Mouse Population", 80 Proc. roy. Soc. Med. Volume 66January 1973 pp 80 - 88.
Author: Yoichi R Okamoto, White House photographer [1]
Usage Terms: Public domain
License: Public domain
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