1. You Can Cut Farm Energy Use;Anonymous;Agway Cooperator,1976
2. Environmental Impact and Economic Viability of Alternative Methods of Wheat Production: A study of New York and Pennsylvania Farmers;Berardi,1976
3. Proceedings of the Ninth Annual Waste Management Conference on Food, Fertilizers and Agricultural Residues;Berardi,1977
4. Farm Business Management;Castle,1972
5. Energy Requirements for Agriculture in California;Cervinka,1974