the Planet with Pesticides and Plastic: The Environmental Triumph of High-Yield Farming. Indianapolis: Hudson Institute. 2000. ISBN 9781558130692. 含有內容需登入查看的頁面
total, contributed nothing to the energy yield. Compere, A.L., and Griffith, W.L. 1991. "The U.S. Calutron Program for Uranium Enrichment: History,. Technology