Attitudes of Canadian dairy farmers toward a voluntary Johne's disease control program.
Sorge
U
U
Department of Population Medicine, University of Guelph, Guelph N1G 2W1, Ontario, Canada. usorge@uoguelph.ca
Kelton
D
D
Lissemore
K
K
Godkin
A
A
Hendrick
S
S
Wells
S
S