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U.S. Fish & Wildlife Service
Vivo Animales, Inc., Leon Leopard
VVND outbreak (Newcastle disease)
Underwriters Laboratories, Inc.
United States Department of Agriculture [I/A]
Unrelated Business Income Tax Protest--San Antonio Zoo 1968 [I]
Walden Pond Zoological Society
White papers zoos in American society (Stephen R. Kellert, n.d., Nancy A. Muckenhirn, ca. 1981)
Wichita Mountain Wildlife Refuge
U.S. Department of Justice
United States Animal Health Association (USAHA) [I/A]