Reviews of new research public agencies and private institutions "Nuclear Power Issues and Choices" Report of the Nuclear Energy Policy Study Group (sponsored by the Ford Foundation, administered by the MITRE Corporation), Ballinger Publishing Co., 17 Dunster St., Cambridge, Mass. 02138. Although the nation's oil and natural gas supplies will be seriously de-pleted before the year 2000, a "mix" of coal-burning generators and uran- ium-powered nuclear plants (light-water reactors)...