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Gustafson, A. F. 1880-1942.

Conservation in the United States [by] A. F. Gustafson [and others] - 3d ed. - Ithaca, N. Y. : Comstock Pub. Co., 1949. - ix, 534 p. illus., maps. 24 cm.

Agr49000401


Natural resources--United States.
Conservation of natural resources--United States.
Soil conservation--United States.


United States--Economic conditions.

HC106.3 / .G885 1949

333.9 / GUC
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