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Science (New York, N.Y.)|February 23, 1979
Venus thermosphere and exosphere: first satellite drag measurements of an extraterrestrial atmosphereG M Keating, R H Tolson, E W HinsonScience (New York, N.Y.)|August 27, 1976
Viking lander location and spin axis of Mars: determination from radio tracking dataW H Michael, R H Tolson, A P Mayo, et al.Science (New York, N.Y.)|January 6, 1978
Viking first encounter of phobos: preliminary resultsR H Tolson, T C Duxbury, G H Born, et al.Science (New York, N.Y.)|March 25, 1998
The structure of the upper atmosphere of mars: In situ accelerometer measurements from mars global surveyorG M Keating, S W Bougher, R W Zurek, et al.Pageof 1