Author/Creator
- United States133
- Library of Congress. Congressional Research Service58
- United States. Congress. House46
- Geological Survey (U.S.)38
- Geological Survey (U.S.), issuing body35
- Permanent Inter-State Committee for Drought Control in the Sahel21
- United States. Congress. House. Committee on Agriculture. (1820- )19
- United States. Congress. Senate15
- United States. Congress. House. Committee on Agriculture13
- United States. Congress. Senate. Committee on Agriculture, Nutrition, and Forestry13
- United States. Congress. Senate. Committee on Energy and Natural Resources13
- Library of Congress. Congressional Research Service, issuing body11
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on Africa11
- United States. Congress. Senate. Committee on Agriculture and Forestry. (1884-1977)11
- Haugen, Gilbert Nelson, 1859-193310
- ebrary, Inc10
- Karl, Thomas9
- Organisation for Economic Co-operation and Development9
- United States. Congress. Senate. Select Committee on Small Business9
- United States. Department of the Interior9