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The Story of Soil Conservation in the South Carolina Piedmont, 1800-1860
Arthur Ryker Hall
出版U.S. Department of Agriculture, 1940
URLhttp://books.google.com.hk/books?id=9K8oAAAAYAAJ&hl=&source=gbs_api
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註釋The present bulletin is an analytical account of some of these early attempts to conserve the soil in a region where cotton was the staple crop and water erosion the principal form of soil exhaustion.