Krans, Edward Henry. Mineralogy : an introduction to the study of minerals and crystal s / Edward Henry Krans, Walter Fred Hunt, Lewis Stephen Ramsdell - 4th ed. - New York : McGraw-Hill , 1951 - vii. 664 p. : ill ; 24 cm. Includes bibliographical references and index. Subjects--Topical Terms: Mineralogy.--------Crystallography.-------- Dewey Class. No.: 549 KRA