Farmer, David W. <br/><br/>
Knots and surface 
/ by David W. Farmer et.al. 
 - Hydrabad:  Universities press limited  1996 
 - vii,101p. 
<br/><br/><label>ISBN: </label>8173711100 
<br/><br/><label>Dewey Class. No.: </label>510  / FAR/K