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- Datamonitor (Firm)50
- United States. Congress. House45
- United States39
- United States. Department of Labor. Bureau of Labor Statistics (1913- )18
- United States. Congress. Senate. Committee on Finance. (1816- )12
- United States. Bureau of the Census11
- United States. Department of Commerce and Labor. Bureau of Manufactures10
- United States. Congress. Senate7
- Library of Congress. Congressional Research Service6
- United States. Congress. House. Committee on Ways and Means. (1795- )6
- ebrary, Inc4
- Business Monitor International Ltd3
- Graedel, T. E.3
- United Nations Environment Programme. Working Group on the Global Metal Flows3
- United States. Department of Commerce and Labor3
- Aldrich, Nelson W. (Nelson Wilmarth), 1841-19152
- Curtis, Kent A.2
- Dawson, William L. (William Levi), 1886-19702
- Dirksen, Everett McKinley, 1896-19692
- Forrant, Robert, 1947-2