Jenny, Hans, 1899-1992. Factors of soil formation : a system of quantitative pedology / Hans Jenny ; foreword by Ronald Amundson. - New York : Dover, c1994. - xviii, 281 pages : illustrations. Originally published: New York : McGraw-Hill, 1941. With new foreword. Includes bibliographical references and index. ISBN: 9780486681283 Subjects--Topical Terms: Soil formation.Formación de suelos. Dewey Class. No.: 551.305