Atherton, Roy. <br/><br/>
Structured programming with comal  [Books]. 
Roy Atherton. 
 - West Sussex  Ellis Horwood Ltd.  1982 
 - Pages: 266 
<br/><br/><label>ISBN: </label>085312423X  0.00 
<br/><br/><label>Subjects--Personal Names: </label><br/>COMAL (computer program language)<br/>Structured programming.
<br/><br/><label>Dewey Class. No.: </label>QA/76.73.C64  / ATH