This report presents detailed national statistics on the employment of America's scientific and engineering manpower in relation to various economic and social characteristics. Responsibility for the publication of this report is shared by the Bureau of the Census and the National Science Foundation. The statistics in this report are based on a postcensal survey conducted in 1962 representing a sample of particular occupations and other groups selected from the 25-percent sample tape file of the population enumerated in the Eighteenth Decennial Census of Population, taken as of April 1, 1960.