Yazar
william hoffard
5 cilt bulundu.
William H. Hoffard · U.S. Dept. of Agriculture, Forest Service, Southeastern Area, Forest Pest Management
Sayfa sayısı yok · 1982
Locust trees / Diseases and pests
William H. Hoffard · USDA Forest Service, Southeastern Area, State and Private Forestry
12 sayfa · 1980
Forestry / Collection and preservation / Plant taxonomy / Identification / Animal taxonomy
William H. Hoffard · U.S. Dept. of Agriculture, Forest Service, Southern Region
36 sayfa · 1995
Trees / Forest health / Diseases and pests / Wounds and injuries
William H. Hoffard · Dept. of Agriculture, Forest Service, Northeastern Area, State & Private Forestry
Sayfa sayısı yok · 1978
Sugar-maple borer
Imants Millers, Robert Anderson, William Burkman, William Hoffard · Yayınevi bilinmiyor
62 sayfa · 1992
Kategori yok