National Academy of Sciences (U.S.). Panel on Renewable Energy Resources & United States Agency for International Development. Office of Science and Technology. (1981). Supplement: energy for rural development: Renewable resources and alternative technologies for developing countries; report of an ad hoc panel of the Advisory Committee on Technology Innovation, Board on Science and Technology for International Development, Commission on International Relations. National Academy Press.

National Academy of Sciences (U.S.). Panel on Renewable Energy Resources agus United States Agency for International Development. Office of Science and Technology. Supplement: Energy for Rural Development: Renewable Resources and Alternative Technologies for Developing Countries; Report of an Ad Hoc Panel of the Advisory Committee on Technology Innovation, Board on Science and Technology for International Development, Commission on International Relations. Washington, D.C.: National Academy Press, 1981.

National Academy of Sciences (U.S.). Panel on Renewable Energy Resources agus United States Agency for International Development. Office of Science and Technology. Supplement: Energy for Rural Development: Renewable Resources and Alternative Technologies for Developing Countries; Report of an Ad Hoc Panel of the Advisory Committee on Technology Innovation, Board on Science and Technology for International Development, Commission on International Relations. National Academy Press, 1981.