Seven-membered heterocyclic compounds containing oxygen and sulfur. 
Edited by Andre Rosowsky. 
 - New York :   Wiley-Interscience,  1972. 
 - xxvii, 949 p.   23 cm. 
 - Chemistry of heterocyclic compounds, v. 26. .
<br/><br/> Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0471382108 
<br/><br/><label>Dewey Class. No.: </label>547.59 WEI