Allen, C. F. H. (Charles Francis Hitchcock), 1895-  <br/><br/>
Six-membered heterocyclic nitrogen compounds with three condensed rings / 
by C. F. H. Allen, in collaboration with G. M. Badger ... (et al.) 
 - New York:  Interscience Publishers,  1958. 
 - xxii, 624 p. :   ill. ;   24 cm. 
 - Chemistry of heterocyclic compounds ; v.12. .
<br/><br/>Includes bibliography. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Organonitrogen compounds.<br/>Heterocyclic compounds.