Yazar
Mervin William Nielson
8 cilt bulundu.
Mervin William Nielson · Yayınevi bilinmiyor
10 sayfa · 1967
Alfalfa / Bruchophagus roddi / Disease and pest resistance
Mervin William Nielson · U.S. Dept. of Agriculture, Agricultural Research Service
12 sayfa · 1962
Leafhoppers / Nomenclature / Insects as carriers of plant disease / Virus diseases of plants
Mervin William Nielson · Entomology Department, Bishop Museum
318 sayfa · 1975
Classification / Insects / Leafhoppers / Homoptera / Teruliini
Mervin William Nielson · U.S. Agricultural Research Service; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
386 sayfa · 1968
Virus diseases of plants / Leafhoppers / Insects as carriers of plant disease
Mervin William Nielson · Dept. of Entomology, Bishop Museum
329 sayfa · 1979
Classification / Insects / Terulia