Yazar
Ray Roland Hirt
6 cilt bulundu.
Cilt sonuçları
Pinus strobus L
Ray Roland Hirt · State University College of Forestry at Syracuse University
90 sayfa · 1959
White pine / Diseases and pests / Bibliography
The relation of certain meteorological factors to the infection of eastern white pine by the blister-rust fungus
Ray Roland Hirt · New York State College of Forestry
65 sayfa · 1942
Agricultural Meteorology / Cronartium ribicola / Meteorology, Agricultural
Fungi causing decay in wooden boats
Ross W. Davidson, Frances F. Lombard, Ray Roland Hirt · Yayınevi bilinmiyor
327 sayfa · 1947
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