1. Energy and U.S. agriculture: 1974 data base;Economic Research Service;Federal Energy Admin. Publ. FEA/D-77/140,1977
2. Energy and U.S. agriculture: irrigation pumping;Sloggett,1979
3. Energy in irrigated crop production;Larson;Trans. Am. Soc. Agr. Engineers,1978
4. Evaluation of solar energy for irrigation pumping;Larson;Trans. Am. Soc. Agr. Engineers,1978
5. The twenty-five kilowatt photovoltaic experiment—a five year analysis;Sullivan,1982