Parasites of bison in northwestern U.S.A.
D000818:Animals; D016164:Bison; D004175:Diptera; D006373:Helminthiasis / Q000453:epidemiology*; D006376:Helminths; D010271:Parasites; D014258:Trichuris
ANIMALS; FLIES; HELMINTH INFECTIONS/epidemiology; TRICHOCEPHALUS