Armstrong, Russell M. <br/><br/>
Modular programming in COBOL / 
Russell M. Armstrong 
 - New York :  John Wiley & Sons,  1973 
 - xi, 211p. :  ill. ;  24 cm. 
<br/><br/> 'A Wiley-Interscience publication' 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0471033251 
<br/><br/><label>LCCN: </label>73-004030 
<br/><br/><label>Subjects--Topical Terms: </label><br/>COBOL (Computer program language)