Soil conservation in the United States: Policy and planning : 249 pp., 1990, Johns Hopkins University Press, Baltimore and London, $45 hb, $18.50 pb期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Soil conservation in the United States: Policy and planning : 249 pp., 1990, Johns Hopkins University Press, Baltimore and London, $45 hb, $18.50 pb

Authors:	Mark B Lapping

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