Yazar
Barbara C Weber
2 cilt bulundu.
Cilt sonuçları
How to diagnose black walnut damage
Barbara C Weber · North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture
20 sayfa · 1980
Diseases and pests / Eastern black walnut / Hardwoods
Walnut insects and diseases
Kessler, Kenneth J. Jr, Barbara C. Weber · North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture
100 sayfa · 1979
Eastern black walnut / Diseases and pests / Congresses