Sparks, B.W. . Geomorphology / Textual Documents B.W. Sparks. - 2nd ed. / - England : Longman , 1972. - xxi, 530p. : ill. ; 24cm . Bib, Index ISBN: 0 582 48147 3 Subjects--Index Terms: Geology Geomorphology PG-Geology Dewey Class. No.: 551.4 / Sp 11 Ge