(1979). Solar energy and nonfossil fuel research: A directory of projects related to agriculture 1976-79. Washington, D.C. : United States. Department of Agriculture.
Chicago Style (17th ed.) CitationSolar Energy and Nonfossil Fuel Research: A Directory of Projects Related to Agriculture 1976-79. Washington, D.C. : United States. Department of Agriculture, 1979.
MLA (8th ed.) CitationSolar Energy and Nonfossil Fuel Research: A Directory of Projects Related to Agriculture 1976-79. Washington, D.C. : United States. Department of Agriculture, 1979.
IICA/CATIE Citation1979. Solar energy and nonfossil fuel research: A directory of projects related to agriculture 1976-79. Washington, D.C. : United States. Department of Agriculture.