c a weigel

C. A. Weigel · U.S. Dept. of Agriculture

16 sayfa · 1926

Greenhouse plants / Insecticides

C. A. Weigel · U.S. Dept. of Agriculture

25 sayfa · 1920

Chrysanthemums / Diseases and pests

C. A. Weigel · U.S. Dept. of Agriculture

115 sayfa · 1948

Diseases and pests / Entomology / Flowers / Insect pests / Ornamental Plants

C. A. Weigel · U.S. Dept. of Agriculture

48 sayfa · 1926

Strawberry root-worm / Roses / Diseases and pests

C. A. Weigel · U.S. Dept. of Agriculture

36 sayfa · 1923

Chrysanthemums / Diseases and pests

C. A. Weigel · U.S. Dept. of Agriculture

Sayfa sayısı yok · 1927

Control / Carbon disulphide / Equipment and supplies / Narcissus bulb fly / Fumigation

C. A. Weigel · Yayınevi bilinmiyor

Sayfa sayısı yok · 1931

Control / Garden pests / Radio scripts / Insect pests / Gardens

C. A. Weigel · American Horticultural Soc.

12 sayfa · 1926

Insect pests / Garden pests

C. A. Weigel, William Middleton · U.S. Dept. of Agriculture

54 sayfa · 1926

Flowers / Diseases and pests

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

81 sayfa · 1923

Greenhouse plants / Diseases and pests / Insect pests