TY - BOOK AU - Gupta, R. R. AU - Kumar, M. AU - Gupta, V. TI - Heterocyclic Chemistry Vol.1: Principles, Three and Four-Membered Heterocycles SN - 9788181282200 U1 - 547.59 PY - 2005/// CY - Berlin PB - Springer-Verlag KW - Chemistry ER -