Langford, Cooper Harold The development of chemical principles [by] Cooper H. Langford and Ralph A Beebe. - Reading, Mass. Addison-Wesley Pub. Co. [1969] - 384 p. illus. 25 cm. - Addison-Wesley series in chemistry . Includes bibliographies. LCCN: 69019990 Subjects--Topical Terms: Chemistry LC Class. No.: QD31 / .L34 Dewey Class. No.: 540