Yazar
Martin Vavra
5 cilt bulundu.
Cilt sonuçları
Problem analysis
Martin Vavra · Range and Wildlife Habitat Laboratory, PNWFRES, USFS
60 sayfa · 1980
Forage / Big game animals / Feeding and feeds / Animal feeding
Ecological implications of livestock herbivory in the West
Martin Vavra, William A. Laycock, Rex D. Pieper · Society for Range Management
Sayfa sayısı yok · 1994
Grazing / Rangelands / Livestock / Overgrazing / Range management