Bernhard M. Thimm
Klaus Nielsen
James O. Palmer
Mehmet Turgut
I. Forest Huddleson
Unknown Author
World Health Organization (WHO)
Harold Jerome Harris
Ivan Fedorovich Volkov
Wesley W. Spink
G. G. Alton
M. Monir Madkour
Pablo Purriel
A. V. Hardy
United States. Animal and Plant Health Inspection Service. Veterinary Services
United States. Agricultural Research Service. Animal Health Division.
Paul Nicoletti