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Man-made radio noise

A. D. SpauldingR. T. DisneyA. G. Hubbard

出版	U.S. Department of Commerce, Office of Telecommunications, 1974
URL	http://books.google.com.hk/books?id=1ttpT_UD94AC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN