Simpson, James Charles Edward,  1908-1952. <br/><br/>
Condensed pyridazine and pyrazine rings (cinnolines, phthalazines, and quinoxalines) / 
J.C.E. Simpson. 
 - New York :  Interscience Publishers,  1953. 
 - 394 p. :  illus. ;  24 cm. 
 - The Chemistry of heterocyclic compounds  v. 15 .
 - 547.1  547.8* .
<br/><br/><label>Nat. Bib. No.: </label>GB53-9226 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pyridazine.
<br/><br/><label>Dewey Class. No.: </label>547.1  547.8*