TY  - BOOK
AU  - Gupta,R.R.
AU  - Kumar,M.
AU  - Gupta,V.
TI  - Heterocyclic chemistry
SN  - 3540648402
U1  - 547.59 
PY  - 1999///
CY  - Berlin
PB  - Springer
KW  - Heterocyclic chemistry
N1  - Includes bibliographical references and index; Vol. 1. Principles, three- and four-membered heterocycles -- v. 2. Five-membered heterocycles
ER  -