TY  - BOOK
TI  - Heterocyclic Compounds: edited by Robert C. Elderfield
U1  - 54.59 
PY  - 1957///
CY  - New York
PB  - John Wiley
N1  - Contents:V.5 five membered heterocycles containing two hetero alams and their benzo derivatives. Elderfield, Robert C
ER  -