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Abstracts of Recent Published Material on Soil and Water Conservation
出版
U.S. Department of Agriculture, Soil Conservation Service
, 1950
URL
http://books.google.com.hk/books?id=Q_M9p5mqm_kC&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN
註釋
Abstracts for Dec. 1954- issued in the Agricultural Research Service's series ARS-41.