This is our land : the story of conservation in the United States - Cheyney, Edward G. (Edward Gheen), 1878-1950.; Schantz-Hansen, T. (Thorvald), 1891-1971 (Saint Paul : Webb Pub. Co., 1946)
Includes index.
Bibliography: p. 335-337.
Keywords: Natural resources -- United States; United States -- Economic conditions