Webworms injurious to cereal and forage crops and their control
Ainslie, G.G.
Webworms injurious to cereal and forage crops and their control - Washington 1922 - 1-16 p. - Webworms, Forage, Crops United States Department of Agriculture. Farmers Bulletin No. 1258 .
Webworms injurious to cereal and forage crops and their control - Washington 1922 - 1-16 p. - Webworms, Forage, Crops United States Department of Agriculture. Farmers Bulletin No. 1258 .