Greenberg, Marvin Jay <br/><br/>
Euclidean and non-Euclidean geometries :  development and history / 
by Marvin Jay Greenberg. 
 - San Francisco :  W. H. Freeman,  1974 
 - xi, 304 p. :  ill. ;  25 cm. 
<br/><br/>Bibliography: p.  291 -294 
<br/><br/><label>ISBN: </label>0716704544 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry<br/>Geometry, Non--Euclidean.<br/>Geometry--History.<br/>Geometry, Non--Euclidean--History.