Hanson, James Ralph. The tetracyclic diterpenes [by] J. R. Hanson. - [1st ed.] - Oxford, New York, Oxford, New York, Pergamon Press [1968] - International series of monographs in organic chemistry, v. 9 . Includes bibliographies. LCCN: 68028684 Subjects--Topical Terms: Diterpenes.Polycyclic compounds. LC Class. No.: QD416 / .H32 1968 Dewey Class. No.: 547/.71