Open University <br/><br/>
Systems modelling : Units,5,6 
by Open University 
 -  1978 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>77585 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic engineering
<br/><br/><label>Dewey Class. No.: </label>D65,8(2:55), L8