Worth/ Thomas  <br/><br/>
Cobal for beginners 

 - New Delhi  prentice hall  1986 
 - 369 
<br/><br/><br/>ENGLISH 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>cobal
<br/><br/><label>Dewey Class. No.: </label>1.6442  / WOR