CAS printed access tools : a user guide. 

 - Washington :  American chemical society,  c1984. 
 - 354 p. :  28 cm. 
<br/><br/> 1984 ed.  CAS a division of the American chemical society 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DOCUMENTACION -QUIMICA
<br/><br/><label>Universal Decimal Class. No.: </label>002:54 54:002