The SONAR and radar  how does it work? 
A. I. Team (comp.) 
 - 22p.  col. ill.  20cm. 
 - My ICT Data Bank .
<br/><br/><label>ISBN: </label>9831502280  $15.90 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sonar--Juvenile Literature<br/>Radar--Juvenile Literature
<br/><br/><label>Dewey Class. No.: </label>621.3895