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Author/Creator
- Library of Congress. Congressional Research Service54
- Adam Matthew Digital (Firm), digitiser52
- National Center for Education Statistics52
- United States. Bureau of the Census39
- ebrary, Inc24
- International Monetary Fund23
- Organisation for Economic Co-operation and Development16
- Germany (West). Statistisches Bundesamt13
- United States. General Accounting Office13
- National Center for Educational Statistics12
- National Science Foundation (U.S.). Division of Science Resources Studies11
- Safari Books Online (Firm)11
- World Bank11
- 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
- South Africa. Office of the Auditor-General7
- United States. Congressional Budget Office7
- United States. Department of Agriculture. Economic Research Service7