Rosenthal, David A <br/><br/>
An inquiry driven vision system based on visual and conceptual hierarchies / 
by David A. Rosenthal 
 - Ann Arbor, Mich. :  UMI Research Press,  1981 
 - 198p. :  24 cm. 
 - Computer science  no. 7 .
<br/><br/>Revision of thesis (Ph.D.)--University of Pennsylvania, 1978 
<br/><br/><label>LCCN: </label>81-7616 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Image processing--Digital techniques