Waring, Alan, <br/><br/>
Practical systems thinking / 
Alan Waring. 
 - London :  International Thomson Business Press,  1996. 
 - 282 p. ;  25 cm. 
<br/><br/><label>ISBN: </label>0412717506  RM77.20 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Problems solving<br/>Management science<br/>System analysis