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steven a katovich
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Impact of forest stressors on the tree species of the Nicolet National Forest, past, present, and future
Steven A. Katovich · USDA Forest Service, Northeastern Area State and Private Forestry, Forest Health Protection
103 sayfa · 1998
Trees / Diseases and pests
How to grow and maintain a healthy birch tree
Steven A. Katovich · U.S. Dept. of Agriculture, Forest Service, Northeastern Area, State & Private Forestry
21 sayfa · 1997
Birch
Christmas tree pest manual
Steven A. Katovich · United States Department of Agriculture, Forest Service, Northeastern Area, State and Private Forestry
160 sayfa · 2014
Christmas trees / Handbooks, manuals / Diseases and pests
Yellowheaded spruce sawfly
Steven A. Katovich · U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
24 sayfa · 1995
Yellow-headed spruce sawfly / Control / Ecology