01589nam 2200409 450 991069860490332120150925073350.0(CKB)5470000002436600(OCoLC)921881818(OCoLC)995470000002436600(EXLCZ)99547000000243660020150922d1970 ua 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierAtlas of ionograms /edited by A.H. Shapley ; prepared by Research Laboratories, ESSA, Boulder, ColoradoAsheville, N.C. :U.S. Department of Commerce, Environmental Science Services Administration, Environmental Data Service, 1970.1 online resource (various pagings) illustrations, mapsWorld Data Center A, Upper Atmosphere Geophysics. Report UAG ;10"May 1970."At head of title: World Data Center A, Upper Atmospheric Geophysics.Title from title screen (viewed September 22, 2015).Includes bibliographical references and index.Ionospheric radio wave propagationObservationsIonosphereResearchIonospheric radio wave propagationIonosphereResearch.Shapley Alan H.United States.Environmental Science Services Administration.Research Laboratories,GPOGPOBOOK9910698604903321Atlas of ionograms3255428UNINA