Yazar
W Wagener
15 cilt bulundu.
Willis W. Wagener · California Forest and Range Experiment Station
Sayfa sayısı yok · 1961
Dwarf mistletoes / Ponderosa pine / Jeffrey pine / Plant parasites / Diseases and pests
Willis W. Wagener · Pacific Southwest Forest and Range Experiment Station
11 sayfa · 1961
Forest fires / Trees / Wounds and injuries
Willis W. Wagener · California Forest and Range Experiment Station
Sayfa sayısı yok · 1955
Post-fire forest management / Forest regeneration
W. E. Wagener · German Agency for Technical Cooperation
102 sayfa · 1975
Study and teaching / Technology
Willis W. Wagener · Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
29 sayfa · 1963
Safety measures / Forest reserves / Forests and forestry / Trees / Diseases and pests
Willis W. Wagener · Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
11 sayfa · 1972
Wood / Slash (Logging) / Deterioration
Carl B. Wolf, Willis W. Wagener · Rancho Santa Ana Botanic Garden
444 sayfa · 1948
Cypress / Diseases and pests / Cyperaceae