Checkland, Peter. <br/><br/>
Soft systems methodology :  a 30-year retrospective / 
 Systems, thingking, systems practice 
Peter Checkland. 
 - Chichester ;  New York :  John Wiley,  c1999. 
 - 1 v. (various pagings) :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0471986062 (pbk. : alk. paper) 
<br/><br/><label>LCCN: </label>99037608  
<br/><br/><label>Subjects--Topical Terms: </label><br/>System theory.
<br/><br/><label>LC Class. No.: </label>Q295  / .C45 1999 
<br/><br/><label>Dewey Class. No.: </label>003