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Investigation of the D and E Regions of the Ionosphere During the International Quiet Sun Year. by L. G. Smith, L. H. Weeks, and P. J. McKinnon

出版	Clearinghouse for Federal Scientific and Technical Information, 1966
URL	http://books.google.com.hk/books?id=aPq9lGDOw6AC&hl=&source=gbs_api