Thomas, Alan,  1948- <br/><br/>
Human activity systems :  a systems approach / 
prepared for the Systems Management Course Team by Alan Thomas. 
 - Milton Keynes :  Open University Press,  1974. 
 - 48 p. :  ill. ;  30 cm. 
 - Systems management ;  unit 3 t242; 3 .
<br/><br/><label>ISBN: </label>033502713X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Management<br/>System analysis.
<br/><br/><label>Dewey Class. No.: </label>658.502