Yazar
r l gallun
2 cilt bulundu.
Cilt sonuçları
The Hessian fly
R. L. Gallun · U.S. Dept. of Agriculture
Sayfa sayısı yok · 1965
Hessian flies / Control / Wheat / Diseases and pests / Disease and pest resistance
Wheat cultivars resistant to races of Hessian fly
R. L. Gallun · Agricultural Research Service, U.S. Dept. of Agriculture
16 sayfa · 1971
Control / Disease and pest resistance / Wheat / Genetic aspects / Hessian flies