Judson, Sheldon. Physical geology / Sheldon Judson, Marvin E. Kauffman, L. Don Leet. - 7th ed. - Englewood Cliffs, N.J. : Prentice-Hall, c1987. - ix, 484 p. : ill. (some col.) ISBN: 0136696988 : $39.50 Subjects--Topical Terms: Physical geology. LC Class. No.: QE28.2 / .J8 1987 Dewey Class. No.: 551�19