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The National Geodetic Survey, Horizontal Control as Applied to Local Surveying Needs

National Ocean Survey

出版	U.S. Department of Commerce : National Oceanic and Atmospheric Administration : National Ocean Survey, 1972
URL	http://books.google.com.hk/books?id=1SsXYz_9ra8C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN