This is the first in a series of reports based on the 1972 Professional, Technical, and Scientific Manpower Survey, which was sponsored by the National Science Foundation and conducted by the Bureau of the Census.¹ Included in this report are preliminary data highlighting selected information on employment status, age, sex, and education of persons identified in the 1970 Census of Population as working in engineering, scientific, and technical occupations in the United States. The occupation groupings included in the universe of this report are as follows:²

• Computer specialists
• Operations and systems researchers and analysts
• Engineers
• Mathematical specialists
• Life scientists
• Physical scientists
• Social scientists
• Engineering and science technicians

More detailed statistics for these persons, covering such topics as fields of study, membership in professional societies, and other characteristics, cross-classified by age and highest degree held, will appear in a later report in the Technical Paper series.

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¹ A detailed discussion of this survey is presented in American Statistical Association, Proceedings of the Social Statistics Section, 1972, Chapter XII.
² Specific occupation titles included in these groupings are given in the section on Definitions and Explanations.