National Academy of Sciences. (1976). Energy for rural development: Renewable resources and alternative technologies for developing countries (1a. ed.). National Academy of Sciences.
Dyfyniad Arddull ChicagoNational Academy of Sciences. Energy for Rural Development: Renewable Resources and Alternative Technologies for Developing Countries. 1a. ed. Washington, D.C: National Academy of Sciences, 1976.
Dyfyniad MLANational Academy of Sciences. Energy for Rural Development: Renewable Resources and Alternative Technologies for Developing Countries. 1a. ed. National Academy of Sciences, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.