Popkin, Gary S. <br/><br/>
Comprehensive structured COBOL / 
by Gary S. Popkin. 
 - 3rd ed. 
 - Boston, Mass. :  PWS-KENT,  1989. 
 - xiv, 795 p. 
 - Computer Science. .
<br/><br/><label>ISBN: </label>053491781X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer science.<br/>COBOL (Computer program language).<br/>Structured programming.