Conservation in the United States
Gustafson, A. F. 1880-1942.
Conservation in the United States [by] A.F. Gustafson. - 3d ed. - Ithaca, N.Y. Comstock Pub. Co., 1949. - ix, 534 p. illus., maps 24 cm.
"Suggestions for supplementary reading": p. [513]-520.
agr49000401
Natural resources--United States.
United States--Economic conditions.
HC106.3 / .G885 1949
333.72
Conservation in the United States [by] A.F. Gustafson. - 3d ed. - Ithaca, N.Y. Comstock Pub. Co., 1949. - ix, 534 p. illus., maps 24 cm.
"Suggestions for supplementary reading": p. [513]-520.
agr49000401
Natural resources--United States.
United States--Economic conditions.
HC106.3 / .G885 1949
333.72