Columbia subject headings:
Irrigation--Government policy--West (U.S.)
Reclamation of land--Government policy--West (U.S.)
United States. Bureau of Reclamation.
Harvard subject headings:
Irrigation--Government policy--West (U.S.)
Reclamation of land--Government policy--West (U.S.)
United States. Bureau of Reclamation.
Princeton subject headings:
Irrigation--Government policy--West (U.S.).
Reclamations of land--Government policy--West (U.S.)
United States. Bureau of Reclamation