Edsger W Dijkstra,WHJ Feijen <br/><br/>
Methode of programming 

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 -  Addison-Wesley Publishing  1988 
 - 188 
<br/><br/>  
<br/><br/><label>ISBN: </label>0-201-17536-3 
<br/><br/><label>Dewey Class. No.: </label>004.43