823<br/>KHA<br/><br/>
15017<br/><br/>
Khatri, Vikas <br/><br/>
36 Unsolved mysteries of the world 
/ Vikas Khatri 
. – New Delhi :  Pustak Mahal, 2011.
<br/><br/>143 p. 
<br/><br/>ISBN 9788122312263  : Rs. 100/ -.
<br/><br/><label>Dewey Class. No.: </label>823  / KHA