Western duck sickness
Kalmbach, E.R., Gunderson, M.F
Western duck sickness A form of botulism - Washington 1934 - 1-82 p. - Duck United States Department of Agriculture. Technical Bulletin No. 411 .
Western duck sickness A form of botulism - Washington 1934 - 1-82 p. - Duck United States Department of Agriculture. Technical Bulletin No. 411 .