TY - BOOK ID - 139083349 TI - Six-membered heterocyclic nitrogen compounds with three condensed rings AU - Allen, C. F. H. AU - Badger, G. M. PY - 1958 PB - New York (N.Y.): Interscience DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:139083349 AB - ER -