Duff P Mcl D Ed. Holmes' principles of physical geology - 4th - London ELBS 1992 - xvi, 791p. cm. Index 779-791p. ISBN: 0412461900 (pbk) Standard No.: 2680 Source: Textual Subjects--Topical Terms: Physical Geology Dewey Class. No.: H4, H5;N2 TH