Ernst, George W. <br/><br/>
GPS  A case study in generality and problem solving 
by George W. Ernst and Allen Newell 
 - New York  Academic Press  1969 
 - x, 297p.  incl. app., bibl., ind. 
 - ACM Monograph Series .
<br/><br/><label>LCCN: </label>69-12276 
<br/><br/><label>Dewey Class. No.: </label>001.642  / N694