TY  - BOOK
AU  - Gupta, R.R.
AU  - Gupta, V.
AU  - Kumar, M.
TI  - Heterocyclic chemistry
SN  - 8181282213 .- 9788181282217.
U1  - 547.59 
PY  - 2005///
CY  - New Delhi
PB  - Springer
KW  - Chemistry, Organic
KW  - Organic compounds
N1  - Contents: v.1. Principles, three-and four-membered heterocycles - v.2. Five-membered heterocycles
ER  -