Ryan, P. J. <br/><br/>
Euclidean and non-Euclidean geometry:  an analytical approach/ 
Patrick J. Ryan. 
 - Cambridge, UK  New York:  Cambridge University Press,  1986. 
 - xvii, 215 p.:  ill.;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 210-211. 
<br/><br/><label>ISBN: </label>0521256542 0521276357 (pbk.) 
<br/><br/><label>LCCN: </label>85017146 
<br/><br/><label>Nat. Bib. No.: </label>GB85-38940 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry, Plane.<br/>Geometry, Non-Euclidean.
<br/><br/><label>Dewey Class. No.: </label>516.1  / R989e 
<br/><br/><label>Universal Decimal Class. No.: </label>513 514.13