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Auroral Electrojet Magnetic Activity Indices AE for 1970

Joe Haskell Allen

出版	U.S. Department of Commerce, National Oceanic and Atmospheric Administration, Environmental Data Service, 1972
URL	http://books.google.com.hk/books?id=9F1CAQAAIAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN