TY  - BOOK
AU  - Elderfield, Robert C.
TI  - Heterocyclic compounds: edited by Robert C. Elderfield
U1  - 547.59 
PY  - 1967///
CY  - New York
PB  - John Wiley
KW  - Chemistry, Organic
N1  - Contents:V.8 Tetrazoles tetrazines, and purines and related ring systems
ER  -