Studies of past, present and projected supplies of scientists and engineers and their utilization in science and engineering are reviewed in this report. It is the intent of the study to explain the differences of opinion about the future supply and utilization of scientists and engineers and also to provide an assessment. Contents discuss: (1) how projections are made and used (introductory comments); (2) a decade of supply and demand (examining unemployment in the field); (3) supply (presenting data on new graduates in each science related field and also on immigrants and transfers); (4) the present supply (assessing current findings); (5) demand (focusing on demands for new graduates, experienced scientists and engineers, academic faculty and demands in research and development); (6) projections of supply and demand (providing data on supply/demand balance and on growth in defense and nondefense requirements); and (7) summary and conclusions. Also included are listings of 45 notes and references, data sources for the 38 tables found in the report, a bibliography, and citings of other publications of the Scientific Manpower Commission. (ML)