Judson, Sheldon . Physical Geology / Textual Documents Sheldon Judson, M.E. Kauffman, L.Don Leet. - 7th ed. / - New Jresey : Prentice-Hall, Inc. , 1987. - ix, 484p. : ill. ; 28cm . Index ISBN: 0-13-669698-8 Subjects--Index Terms: Geology Geophysics PG-Geology Dewey Class. No.: 551 / Ju 88 Ph