TY  - BOOK
AU  - Allen, Charles Francis Hitchcock
TI  - Six-membered heterocyclic nitrogen compounds with four condensed rings (vol-2)
T2  - 2
U1  - 547.6 
PY  - 1951///
CY  - New York
PB  - Interscience Publication
KW  - Chemistry
KW  - Organic chemistry
N1  - organic chemistry, synthesis, chemical reactions
ER  -