TY  - BOOK
AU  - ALLEN C F H
TI  - SIX MEMBERD HETROCYCLIC NITROGEN COMPOUNDS WITH FOUR CONDENSED RINGS VOL 2
U1  - 547.59 ALL 
PY  - 1951///
CY  - LONDON
PB  - INTERSCIENCE
KW  - SIX MEMBERD HETROCYCLIC NITROGEN COMPOUNDS WITH FOUR CONDENSED RINGS
N1  -  NO PRICE
ER  -