e r sasscer

E. R. Sasscer · U.S. Dept. of Agriculture

Sayfa sayısı yok · 1919

Roses / Diseases and pests / Hessian flies

E. R. Sasscer · U.S. Dept. of Agriculture

20 sayfa · 1917

Greenhouses / Fumigation / Hydrocyanic acid gas

E. R. Sasscer · U.S. Dept. of Agriculture

Sayfa sayısı yok · 1915

Control / Insect pests / Seeds / Disinfection

E. R. Sasscer · Govt. Print. Off.

82 sayfa · 1912

Fiorinia

C. A. Weigel, E. R. Sasscer · U.S. Dept. of Agriculture

81 sayfa · 1923

Greenhouse plants / Diseases and pests / Insect pests