Lyell, Charles, Principles of geology / Charles Lyell ; edited with an introduction by James A. Secord. - London ; New York : Penguin Books, 1997. - xlvii, 471 p. : ill. ; An abridgement of 3 v. set first published 1830-33. Includes bibliographical references and index. ISBN: 014043528X Subjects--Topical Terms: Geology. Dewey Class. No.: 550 / LYE.P