Yazar
Dennis R Hamel
20 cilt bulundu.
Dennis R. Hamel · U.S. Dept. of Agriculture, Forest Service ; for sale by the Supt. of Docs., U.S. G.P.O.
645 sayfa · 1981
Control / Handbooks, manuals / Pesticides / Pests
Dennis R Hamel · U.S. Dept. of Agriculture, Forest Service
11 sayfa · 1987
Environmental aspects / Environmental aspects of Pesticides / Forest management / Pesticides
Dennis R. Hamel · Tico Press
738 sayfa · 1991
Classification / Insects / Insects on postage stamps / Nomenclature (Popular)
Dennis R. Hamel · Forest Environmental Protection, USDA, Forest Service, Northern Region, State & Private Forestry
Sayfa sayısı yok · 1976
Diseases and pests / Lodgepole pine / Mountain pine beetle
Dennis R Hamel · U.S. Dept. of Agriculture, Forest Service, Forest Pest Management
52 sayfa · 1985
Control / Diseases and pests / Forest protection / Herbicides / Plants, Protection of
Dennis R. Hamel · Forest Insect & Disease Management, USDA, Forest Service, Northern Region, State & Private Forestry
Sayfa sayısı yok · 1977
Diseases and pests / Lodgepole pine / Mountain pine beetle
Dennis R. Hamel · Forest Insect & Disease Management, USDA, Forest Service, Northern Region, State & Private Forestry
Sayfa sayısı yok · 1977
Diseases and pests / Mountain pine beetle / Ponderosa pine
Dennis R. Hamel · Forest Insect & Disease Management, USDA, Forest Service, Northern Region, State & Private Forestry
Sayfa sayısı yok · 1977
Diseases and pests / Insect surveys / Lodgepole pine / Mountain pine beetle
Dennis R. Hamel · Forest Environmental Protection, USDA, Forest Service, Northern Region, State & Private Forestry
10 sayfa · 1976
Diseases and pests / Mountain pine beetle / Pine
Dennis R. Hamel · Forest Environmental Protection, USDA, Forest Service, Northern Region, State & Private Forestry
Sayfa sayısı yok · 1975
Diseases and pests / Lodgepole pine / Mountain pine beetle
Dennis R. Hamel · Forest Insect & Disease Management, USDA, Forest Service, Northern Region, State & Private Forestry
Sayfa sayısı yok · 1977
Control / Diseases and pests / Lodgepole pine / Mountain pine beetle
Dennis R. Hamel · Forest Environmental Protection, USDA, Forest Service, Northern Region, State & Private Forestry
Sayfa sayısı yok · 1975
Diseases and pests / Lodgepole pine / Mountain pine beetle
Dennis R. Hamel · USDA, Forest Service, Northern Region, State & Private Forestry
Sayfa sayısı yok · 1974
Diseases and pests / Lodgepole pine / Magdalis
Dennis R. Hamel · Forest Environmental Protection, USDA, Forest Service, Northern Region, State & Private Forestry
Sayfa sayısı yok · 1976
Control / Diseases and pests / Lodgepole pine / Mountain pine beetle
Dennis R. Hamel · USDA Forest Service, Northern Region, Division of State & Private Forestry
Sayfa sayısı yok · 1974
Mountain pine beetle
Dennis R. Hamel · Forest Insect & Disease Management, USDA, Forest Service, Northern Region, State & Private Forestry
Sayfa sayısı yok · 1977
Conifers / Diseases and pests / Mountain pine beetle
Dennis R. Hamel · Forest Insect & Disease Management, USDA, Forest Service, Northern Region, State & Private Forestry
Sayfa sayısı yok · 1977
Diseases and pests / Lodgepole pine / Mountain pine beetle
Dennis R. Hamel · Forest Insect & Disease Management, USDA, Forest Service, Northern Region, State & Private Forestry
Sayfa sayısı yok · 1977
Diseases and pests / Lodgepole pine / Mountain pine beetle
Dennis R. Hamel · Forest Insect & Disease Management, USDA, Forest Service, Northern Region, State & Private Forestry
Sayfa sayısı yok · 1977
Diseases and pests / Mountain pine beetle / Ponderosa pine