TY  - BOOK
AU  - Gupta, R. R.
TI  - Heterocyclic chemistry: Vol:1 Principles, three- and four-membered heterocycles
SN  - 3-540-64840-2
U1  - 547.59 
PY  - 1998///
CY  - Berlin
PB  - Springer
KW  - Heterocyclic chemistry
ER  -