Ryan, Patrick J. <br/><br/>
Euclidean and non-euclidean geometry :  an analytic approach / 
Patrick J. Ryan 
 - Rep. with corrections 
 - Cambridge :  Cambridge University Press,  1987 
 - 215 p. :  ill. ;  23 cm 
<br/><br/><label>ISBN: </label>0521256542 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry<br/>Geometry, Non--Euclidean