Yazar
Russell Gum
4 cilt bulundu.
Cilt sonuçları
Coyote control
Russell L. Gum · Department of Agriculture, Economics, Statistics, and Cooperatives Service
Sayfa sayısı yok · 1978
Coyote / Control
Economic impacts of biotechnical innovations in the U.S. and Arizona dairy and cotton industries
Russell Gum · College of Agriculture, University of Arizona
43 sayfa · 1990
Cotton textile industry / Dairy products industry / Economic aspects of Technological innovations / Technological innovations
Participation and expenditures for hunting, fishing, and general rural outdoor recreation in Arizona
Russell Gum · Agricultural Experiment Station, University of Arizona
27 sayfa · 1973
Statistics / Hunting / Outdoor recreation / Hunting surveys
Economic value of the fur trapping industry in Oregon
Russell Gum · Agricultural Experiment Station, Oregon State University
23 sayfa · 1987
Economic aspects of Fur trade / Economic aspects of Trapping / Fur trade / Trapping