m a yothers

M. A. Yothers · U.S. Dept. of Agriculture

23 sayfa · 1949

Control / Codling moth / Apples / Diseases and pests

M. A. Yothers · U.S. Dept. of Agriculture

15 sayfa · 1931

Fruit / Diseases and pests

M. A. Yothers · U.S. Dept. of Agriculture

12 sayfa · 1941

Treehoppers

M. A. Yothers · U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine

61 sayfa · 1953

Chalcid wasps / Aphids / Bibliography / Biological control

M. A. Yothers · State Agricultural Experiment Station

Sayfa sayısı yok · 1914

Peach twig-borer

M. A. Yothers · State College of Washington, Agricultural Experiment Station

43 sayfa · 1916

Beetles / Control

M. A. Yothers · U.S. Dept. of Agriculture

34 sayfa · 1931

Codling moth / Fruit / Diseases and pests

M. A. Yothers · U.S. Dept. of Agriculture

46 sayfa · 1934

Membracidae / Fruit / Diseases and pests