Collision, J.D. . Sedimentary Structures / Textual Documents J.D. Collision and D.B. Thompson. - 2nd ed. / - London : Unwin Hyman Ltd. , C1989. - x,207p. : ill ; 24cm . Index Subjects--Index Terms: Geology Sedimentary Structures G-Geology Dewey Class. No.: 552.5 / Co 683 Se