Webber M J <br/><br/>
Explanation prediction and planning 
Webber M J 
 - London  1984 
 - vi,214p.  cm. 
<br/><br/> Bibliography 197-208p 
<br/><br/><label>Standard No.: </label>21447 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B28930bY33, M4