Flapan, Erica <br/><br/>
Knots, molecules, and the universe  : an Introduction to topology / 

 - Providence:  American Mathematical Society,  2017 
 - xvii, 386p. Index 
<br/><br/><label>ISBN: </label>9781470437350 
<br/><br/><label>Dewey Class. No.: </label>514  / F568.KM