Leon Jacob Cole, 1877-1948: a brief biography.
Dickerson
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U.S. Department of Agriculture, Lincoln, NE 68583.
Chapman
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D000828:Animal Population Groups / Q000235:genetics; D000818:Animals; D005823:Genetics / Q000266:history; D049673:History, 20th Century; D010944:Plants / Q000235:genetics; D014481:United States