TY - BOOK AU - Gupta R R AU - Gupta V AU - Kumar M TI - Hetrocyclic chemistry SN - 8181282213 (V 2) (pbk) U1 - E8, N8.1;9-;11 N8.2;7-;9 PY - 1998/// CY - Berlin PB - Springer-Verlag KW - Heterocyclic KW - Chemistry N1 - Includes bibliographical references ER -