Ryle Gilbert <br/><br/>
Thinking . 

 - Oxford  Basil Blackwell        1979 
 - xv,136p.  cm. 
<br/><br/><label>Standard No.: </label>50490 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>R3xN00,OT, L9