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Google圖書搜尋
Handbook of Water and Soil Conservation in the Middle Yellow River Loess Region--Communist China
出版
U. S. Department of Commerce, Office of Technical Services, Joint Publications Research Service
, 1963
URL
http://books.google.com.hk/books?id=SGFCAAAAYAAJ&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN