Wendell H. Krull (1897-1971).
Ewing
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College of Veterinary Medicine, Oklahoma State University, Stillwater 74078, USA.
D000818:Animals; D049673:History, 20th Century; D010274:Parasitology / Q000266:history*; D014200:Trematoda / Q000254:growth & development; D014481:United States; D014730:Veterinary Medicine / Q000266:history