Graova Ante Topological approach to the chemsitry of conjugated molecules Graova Ante; Gutman Ivan; Trinajstic Nenad - Berlin Springer- Verlag 1977 - vii, 123p. cm. - Lecture notes in chemistry; 4 . Standard No.: 40396 Source: Textual Subjects--Topical Terms: Molecular spectroscopy Dewey Class. No.: E:218:(B44), L7