Slowey, Jack Atmospheric densities and temperatures from the drag analysis of the Explorer 17 satellite - Cambridge, Mass. : Smithsonian Institution, 1964 - 5, [10] p - Smithsonian Institution. Astrophysical Observatory. SAO special report ; no. 157 . Subjects--Topical Terms: Artificial satellites--Atmospheric entry LC Class. No.: TL796 A1 S6 no. 157