Open University <br/><br/>
Open University: Sysmems behavoiur 

 - Walton-Hall  The Open University         1975 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>31352 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D65,8(B)obG955, L7