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Author/Creator
- Library of Congress. Congressional Research Service54
- National Center for Education Statistics48
- Adam Matthew Digital (Firm), digitiser47
- United States. Bureau of the Census38
- ebrary, Inc23
- International Monetary Fund22
- Organisation for Economic Co-operation and Development16
- National Center for Educational Statistics11
- National Science Foundation (U.S.). Division of Science Resources Studies11
- Safari Books Online (Firm)11
- United States. General Accounting Office11
- World Bank10
- National Science Foundation (U.S.)8
- Choy, Susan P.7
- Citro, Constance F. (Constance Forbes), 1942-7
- National Research Council (U.S.). Panel on Estimates of Poverty for Small Geographic Areas7
- United States. Congressional Budget Office7
- United States. Department of Agriculture. Economic Research Service7
- United States. Office of Coal, Nuclear, Electric, and Alternate Fuels7
- United States. Office of Education7