Skidmore,Steve and Wroe Brenda <br/><br/>
Introducing system analysis/ 

 - ENGLAND   NCC  1988 
 - 222p. 
<br/><br/><label>ISBN: </label>0-675-05219-X 
<br/><br/><label>LC Class. No.: </label>SBL QA 402   / S5 1988