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Roy W Rings
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Cilt sonuçları
The Lepidoptera of Wayne County, Ohio
Roy W. Rings · Ohio Agricultural Research and Development Center, Ohio State University
164 sayfa · 2001
Butterflies / Lepidoptera / Moths
A Worldwide, annotated bibliography of the black cutworm, Agrotis ipsilon (Hufnagel)
Roy W. Rings · Ohio Agricultural Research and Development Center
106 sayfa · 1974
Bibliography / Black cutworm
Insect and mite pests of strawberries in Ohio
Roy W Rings · Ohio Agricultural Research and Development Center
19 sayfa · 1966
Strawberries / Diseases and pests