Gans, David <br/><br/>
An introduction to non-Euclidean geometry. 

 - New York  Academic Press  [1973] 
 - xii, 274 p.  illus.  24 cm. 
<br/><br/>Bibliography: p. 263. 
<br/><br/><label>ISBN: </label>0122748506 
<br/><br/><label>LCCN: </label>72009326 //r85 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry, Non-Euclidean
<br/><br/><label>LC Class. No.: </label>QA685  / .G33 
<br/><br/><label>Dewey Class. No.: </label>516/.9