. (1940) Conservation :the resources we guardWashington, D.C. : U.S. Dept. of the Interior,MLA Citation
. Conservation: The Resources We Guard. Washington, D.C. : U.S. Dept. Of The Interior, 1940. Print.
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Conservation : the resources we guard.
|Published:||Washington, D.C. : U.S. Dept. of the Interior, 1940.|
|Topics:||Conservation of natural resources - United States.|