A Century of conservation, 1849-1949.
Contributors: United States. Dept. of the Interior.
Series: Conservation bulletin / United States Department of the Interior ;; 39; Conservation bulletin (United States. Dept. of the Interior) ;; 39.
Publisher: U.S. G.P.O.
Published: 1950
Place of publication: [Washington, D.C.]
Language: eng
Number of pages: 35
Subjects: United States. Dept. of the Interior -- History.; Conservation of natural resources -- United States.