Christiansen, Eric H. Exploring the planets / Eric H. Christiansen and W. Kenneth Hamblin - 2nd ed. - Englewood Cliffs, N. J. : Prentice Hall, 1995 - 500 p. : ill. ; 29 cm. ISBN: 0023224215 RM162.74 LCCN: 94-18017 Subjects--Topical Terms: Planets--GeologyAstrogeology