Hays, Samuel P.
Conservation and the gospel of efficiency: the progressive conservation movement 1890-1920 / Samuel P. Hays - Cambridge: Harvard University, 1959 - 297p. ; 19 cn. - Harvard historical monograph .
Includes bibliographical references and index.
History of economic thought
Economic thought
330.109 / HAY
Conservation and the gospel of efficiency: the progressive conservation movement 1890-1920 / Samuel P. Hays - Cambridge: Harvard University, 1959 - 297p. ; 19 cn. - Harvard historical monograph .
Includes bibliographical references and index.
History of economic thought
Economic thought
330.109 / HAY