Yourdon, Edward. <br/><br/>
Learning to program in structured COBOL  : parts 1 and 2 

 - Englewood Cliffs, N.J. :  Prentice-Hall,  1979 
 - 478 p. 
<br/><br/><label>LCCN: </label>55524 
<br/><br/><label>Subjects--Topical Terms: </label><br/>COBOL (Programación)<br/>Lenguajes de programación.
<br/><br/><label>Dewey Class. No.: </label>001.6424  / Y6