Gupta, R. R. Heterocyclic chemistry : principles, three-and four-membered heterocycles / R. R. Gupta, M. Kumar and V. Gupta - India Springer 1998 - 422 p. - Volume - 1 . ISBN: 9788181282200 Subjects--Topical Terms: Heterocyclic chemistry Dewey Class. No.: 547.59 GUP-R