Yazar
George Rudolph Manglitz
2 cilt bulundu.
Cilt sonuçları
Sources of resistance to the sweetclover aphid in introduced species of Melilotus
George Rudolph Manglitz · U.S. Dept. of Agriculture, Agricultural Research Service
Sayfa sayısı yok · 1963
Sweet clover / Diseases and pest resistance / Diseases and pests
Resistance in sweetclover to the sweetclover root borer
George Rudolph Manglitz · U.S. Dept. of Agriculture
Sayfa sayısı yok · 1974
Disease and pest resistance / Sweet clover root borer / Sweet clover