00575nam 2200157z- 450 9910712394003321(CKB)5470000002492188(EXLCZ)99547000000249218820230509c1984uuuu -u- -engSignificant achievements in the planetary geology program, 1982National Aeronautics and Space Administration, Scientific and Technical Information OfficeWashington, DCBOOK9910712394003321Significant achievements in the planetary geology program, 19823334739UNINA