Downs, ED. <br/><br/>
Structured systems analysis and design method: application and context 

 - New York: Prentice: Hall  1987 
 - viii,215p.  22 cm. 
<br/><br/><label>ISBN: </label>0138543240 
<br/><br/><label>Dewey Class. No.: </label>004.21  / DOW