Mysteries of mankind  Earth's Unexplained Landmarks  English 
Vijayanarayana Misra 
 -  National Geographic Society  1992 
 - 200 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Earthworks (Archaeology)
<br/><br/><label>Dewey Class. No.: </label>972 MIS  / 9864