Beishon John <br/><br/>
Systems behaviour 

 - 2 
 - London  The Open University Press         1976 
 - 327p.  cm. 
<br/><br/> Bibliography chapterwise; Glossasry 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>B2815, L6