ALLEN, C. F. H. <br/><br/>
Six-membered heterocyclic nitrogen compounds with three condensed rings 
C. F. H. Allen 
 - New York   Interscience Publishers, Inc.  1958 
 - XXII, 624 p. ; 23 cm 
 - \The \\Chemistry of Heterocyclic Compounds\\Interscience Publishers, New York\  12 .
<br/><br/><label>Source: </label>C-183663 
<br/><br/><label>Index Terms--Genre/Form: </label><br/> lucrare de specialitate
<br/><br/><label>Universal Decimal Class. No.: </label>547.8