TY  - BOOK
AU  - Katritzky,Alan R.
TI  - The principles of heterocyclic chemistry
AV  - QD400.K33 
PY  - 1967///
CY  - London
PB  -  : Methuen and  Company Ltd
KW  - Hetrocyclic compounds
KW  - Heterocyclic Chemistry
ER  -