Checkland, Peter, <br/><br/>
Systems thinking, systems practice 
Peter Checkland. 
 - Chichester  Wiley  1981. 
 - xiv, 330pages    illustration,    24cm 
<br/><br/><label>ISBN: </label>0471279110 
<br/><br/><label>Subjects--Topical Terms: </label><br/>System theory