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Wireless Longitude

George Durno CowieU.S. Coast and Geodetic SurveyEngelhardt August Eckhardt

出版	U.S. Government Printing Office, 1924
URL	http://books.google.com.hk/books?id=b4GCjTylxhMC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN