Dhuruvasangary, Veerasingham <br/><br/>
Lost aviation technology 

 - Chennai  New Century  1994 
 - 154 p.  col.ill 
<br/><br/> Ancient craft,ancent landing sites,ancient pilots and mysterious energy are identified classified and tested 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air Transportation
<br/><br/><label>Dewey Class. No.: </label>387.7  / D38