01730nam 2200409 a 450 991069712210332120230902162115.0(CKB)5470000002385694(OCoLC)700510610(EXLCZ)99547000000238569420110204d1975 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierA versatile three-dimensional ray tracing computer program for radio waves in the ionosphere[electronic resource] /R. Michael Jones, Judith J. StephensonWashington D.C. :U.S. Dept. of Commerce, National Telecommunications and Information Administration ;Boulder, Colo. :Institute for Telecommunication Sciences,[1975]1 online resource (15 PDF files (xi, 185 pages)) illustrationsOffice of Telecommunications OT report ;75-76Title from title screen (viewed on Feb. 3, 2011)."October 1975."Includes bibliographical references (pages 64-66).OT report ;75-76.Radio wavesObservationsComputer programsIonosphereObservationsComputer programsRadio wavesObservationsComputer programs.IonosphereComputer programs.Jones R. Michael(Richard Michael),1937-1400433Stephenson J13931Institute for Telecommunication Sciences.GPOGPOBOOK9910697122103321A versatile three-dimensional ray tracing computer program for radio waves in the ionosphere3467351UNINA