References
- 1970 . U.S. Manpower in the 1970's—Opportunity and Challenge , Washington, D.C. : United States Department of Labor, U.S. Government Printing Office . Document No. 0‐405‐273
- 1970 . Trends in Education: United States, 1598 to 1978 , Washington, D.C. : U.S. Department of Health, Education, and Welfare, Office of Education . Document, No. OE‐10068, Government Printing Office No. 0‐388‐434