Ahrens, L. H. Distribution of the elements in our planet [by] L. H. Ahrens. - New York McGraw-Hill [1965] - xi, 110 p. illus. 21 cm. - Earth and planetary science series McGraw-Hill paperbacks . 921004 Bibliography: p. 101-102. LCCN: 65019852 //r83 Subjects--Topical Terms: Geochemistry LC Class. No.: QE515 / .A3 Dewey Class. No.: 551.9