Hückel, Walter, 1895- Theoretical principles of organic chemistry. [Translated from the corr. 7th German ed. by F.H. Rathmann]. - Amsterdam, Houston : Elsevier Pub. Co., 1955-58. - 2 v. il., tables. 26 cm. Subjects--Topical Terms: Chemistry, Organic. Universal Decimal Class. No.: 547