Worth Thomas Ed. <br/><br/>
Cobol for begineers 
Worth Thomas Ed. 
 -  1977 
<br/><br/><label>Standard No.: </label>9770 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D6,8(B289C), L7