... (1) if not treated, will impair or endanger the land, (2) materially affect the productive capacity of the land, (3) represent damage which is unusual in character and, except for wind erosion, is not the type which would recur frequently in the same... Department of Agriculture Appropriations: Hearings Before the Subcommittee - 1453 페이지 저자: United States. Congress. House. Committee on Appropriations - 1958 전체보기 -
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