Controlling gapeworms in poultry ...
Series: U.S. Dept. of Agriculture. Leaflet,; no. 207; Leaflet (United States. Dept. of Agriculture) ;; no. 207.
Publisher: U.S. Govt. Print. Off.
Published: 1941
Place of publication: [Washington
Language: eng
Subjects: Poultry -- Parasites.; Syngamus trachealis.
Other titles: Gapeworms in poultry.
Notes: "By Everett E. Wehr."--p. 1.
Contribution from Bureau of Animal Industry.