01734oam 2200529 450 991070780390332120170111113654.0(CKB)5470000002468524(OCoLC)755271246(EXLCZ)99547000000246852420111002j198707 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierAn improved model of the Earth's gravitational field: *GEM-T1* /J.G. Marsh [and seventeen others]Greenbelt, Maryland :National Aeronautics and Space Administration, Goddard Space Flight Center,July 1987.1 online resource (vi, 354 pages) illustrations, mapsNASA technical memorandum ;4019"July 1987.""Performing organization: Goddard Space Flight Center"--Report documentation page.Includes bibliographical references (pages 329-336).Improved model of the Earth's gravitational fieldEarth gravitationnasatGeodesynasatGravitational fieldsnasatLaser range findersnasatSatellite trackingnasatEarth gravitation.Geodesy.Gravitational fields.Laser range finders.Satellite tracking.Marsh J. G.1422387Goddard Space Flight Center,OCLCEOCLCEOCLCQOCLCFOCLCOOCLCQGPOBOOK9910707803903321GEM-T13550243UNINA