Systems thinking  selected reading 
edited by F. E. Emery. 
 - Harmondsworth  Penguin Books  1969. 
 - 398 pages :  illustration,  ;  18 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0140800719 
<br/><br/><label>Subjects--Topical Terms: </label><br/>System analysis