Popkin, Gary S. <br/><br/>
Comprehensive structured COBOL / 
Gary S. Popkin. 
 - 3rd ed. 
 - Boston, Mass. :  PWS-Kent,  c1989. 
 - xiv, 795 p. ;  28 cm. 
 - PWS-Kent series in computer science. .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>053491781X (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>COBOL (Computer program language).<br/>Structured programming.