Boettcher, Robert R. <br/><br/>
Structured programming in COBOL / 
Robert R. Boettcher 
 - New York :  Holt, Rinchart and Winston,  c1987 
 - 558 p. :  charts 
<br/><br/><label>ISBN: </label>0030705592 
<br/><br/><label>Subjects--Topical Terms: </label><br/>COBOL (Computer programm language)
<br/><br/><label>Dewey Class. No.: </label>621.C6424  / B673S