c m packard

C. M. Packard · U.S. Govt. Print. Off.

Sayfa sayısı yok · 1921

Crane flies / Rangelands

C. M. Packard · Yayınevi bilinmiyor

338 sayfa · 1943

Grain / Injurious and beneficial Insects / Insecticides / Diseases and pests / Insect pests

C. M. Packard · U.S. Dept. of Agriculture

26 sayfa · 1928

Diseases and pests / Hessian flies / Wheat / Hessian fly

C. M: (Clyde Monroe Packard · U.S. Dept. of Agriculture, Bureau of Animal Industry

24 sayfa · 1937

Chinch-bugs / Chinch-bugs--Control.

W. R. Walton, C. M. Packard · U.S. Dept. of Agriculture

14 sayfa · 1930

Hessian fly / Control