Conservation Reader by Fairbanks, Harold W. (Harold Wellman), 1860-

Subjects: “…Natural resources…”
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Proceedings of the second National Conservation Congress at Saint Paul, September 5-8, 1910 by United States. National Conservation Congress

Subjects: “…Natural resources -- Congresses…”
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Proceedings [of the] fourth National Conservation Congress [at] Indianapolis, October 1-4, 1912 by United States. National Conservation Congress

Subjects: “…Natural resources -- Congresses…”
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A Review of the Resources and Industries of the State of Washington, 1909 by Howell, Ithamar M. (Ithamar Martindale), 1866-1920

Subjects: “…Natural resources -- Washington (State)…”
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Conservation Through Engineering Extract from the Annual Report of the Secretary of the Interior by Lane, Franklin K., 1864-1921

Subjects: “…Natural resources -- United States…”
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The Fight for Conservation by Pinchot, Gifford, 1865-1946

Subjects: “…Conservation of natural resources -- United States…”
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