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. :  ill. ;  24 cm. 
 - The chemistry of heterocyclic compounds ;  v 5 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pyridazine