The International Mars Patrol in 1987-89 - Part I. Beish, J. D. ; Parker, D. C. ; Hernandez, C. ; Troiani, D. ; Cralle, H. Abstract Publication: Journal of the Association of Lunar and Planetary Observers, the Strolling Astronomer Pub Date: March 1991 Bibcode: 1991JALPO..35....4B