Author
Harbeck, Guy Earl, 1911-
4
Carter, Nicole T.,
2
Library of Congress. Congressional Research Service,
2
Thomas, N. O. 1916-
2
Geological Survey (U.S.)
1
Geological Survey (U.S.),
1
Hanson, Ronald L. 1934-
1
Hitt, Kerie J.
1
Martin, R. O. R. 1906-
1
Ruddy, Barbara C.
1
United States. Congress. House. Committee on Natural Resources. Subcommittee on Water, Wildlife, and Fisheries,
1