Cooper, John D. A trip through time Principles of Historical Geology John D.Cooper, Richard H.Miller, Jacqueline Patterson - 2nd.ed - Collumbus, Ohio Merrill Publishing Company 1990 - 544 p. : ill. ; 29 cm. Includes bibliographical references and index ISBN: 0675211344 LCCN: 89-62134 Subjects--Topical Terms: Historical geology