Open univesity <br/><br/>
Linear Mathematics 

 - Milton  Keyes The Open University        1972 
 - p.  cm. 
 - Mathematics: A second level course .
<br/><br/><label>Standard No.: </label>19152 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B, L2.18