Yazar
John Willard Barry
18 cilt bulundu.
John Willard Barry · Books Americana
214 sayfa · 1981
Indian pottery / Indian pottery, north america / Antiques
John Willard Barry · U.S. Dept. of Agriculture, Forest Service, Forest Pest Management
29 sayfa · 1991
Bacillus thuringiensis / Gypsy moth / Biological control / Aerial spraying and dusting in forestry
John Willard Barry · An American Chemical Society Publication
313 sayfa · 1995
Biological pest control agents / Congresses / Pests / Biological control
John Willard Barry · U.S. Dept. of Agriculture, Forest Service, Forest Health Protection, Forest Health Technology Enterprise Team
Sayfa sayısı yok · 1996
Pesticides / Application / Environmental aspects / Aerial spraying and dusting in agriculture
John Willard Barry · USDA Forest Service, Forest Pest Management
Sayfa sayısı yok · 1993
Aerial spraying and dusting in forestry / Research / Bacillus thuringiensis / Forest insects / Biological control
John Willard Barry · USDA Forest Service Forest Pest Management
20 sayfa · 1991
Pesticides / Application / Environmental aspects / Aerial spraying and dusting in agriculture
John Willard Barry · U.S. Dept. of Agriculture, Forest Service, Forest Pest Management
14 sayfa · 1985
Aerial spraying and dusting in forestry / Testing / Herbicides / Application / FSCBG (Computer file)
John Willard Barry · U.S. Dept. of Agriculture, Forest Insect & Disease Management, Methods Application Group and Northeastern Area
21 sayfa · 1976
Aerial spraying and dusting in forestry / Spruce budworm / Control
John Willard Barry · USDA Forest Service, Forest Pest Management
16 sayfa · 1987
Aerial spraying and dusting in forestry / Pesticides / Measurement / Environmental aspects
John Willard Barry · USDA Forest Service Forest Pest Management
25 sayfa · 1995
Aerial spraying and dusting in forestry / Herbicides / Application / Aeronautics in forestry
John Willard Barry · USDA Forest Service, Forest Health Protection
Sayfa sayısı yok · 1996
Forest insects / Congresses / Control / Trees / Diseases and pests
John Willard Barry · USDA Forest Service, Forest Health Technology Enterprise Team-Davis
16 sayfa · 1996
Almond / Diseases and pests / Biological control / Peach twig-borer / Bacillus thuringiensis
John Willard Barry · Methods Application Group, Forest Insect and Disease Management, Forest Service, USDA
41 sayfa · 1981
Pesticides / Conifers / Aerial spraying and dusting in forestry / Diseases and pests
John Willard Barry · Methods Application Group, Forest Insect and Disease Management, Forest Service, USDA
10 sayfa · 1980
Spruce budworm / Control / Choristoneura fumiferana / Insecticides / Aerial spraying and dusting in forestry
Roger E. Sandquist, John Willard Barry · USDA Forest Service Forest Pest Management
Sayfa sayısı yok · 1988
Western spruce budworm / Biological control / Bacillus thuringiensis
Patricia J. Skyler, John Willard Barry · USDA Forest Service, Forest Pest Management
268 sayfa · 1991
Wind tunnels / Spraying and dusting in agriculture / Spray nozzles / Flow visualization / Atomization
John Willard Barry · Methods Application Group, Forest Insect and Disease Management, Forest Service, USDA
33 sayfa · 1978
Aerial spraying and dusting in forestry.