TY  - BOOK
AU  - 
AU  - Elderfield, Robert Cooley, Ed.
TI  - Heterocyclic compounds [v.5]: five-membered heterocycles containing two hetero atoms and their benzo derivatives
U1  - 547 
PY  - 1957///
CY  - New York
PB  - John Wiley & Sons
KW  - Heterocyclic compounds
ER  -