American Chemical Society   <br/><br/>
The ring index: a list of ring systems used in organic chemistry.  (Book) 

 - 2nd ed. 
 - Washington, D.C.  American Chemical Society  1964 
 - 515p.  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cyclic compounds--Indexes
<br/><br/><label>Universal Decimal Class. No.: </label>547.1 AME  / 12072