Bonola, Roberto <br/><br/>
Non-Euclidean Geometry 
A Critical and Historical Study of its Development 
 - New York  Dover Publications, Inc.  1955 
 - 268 
<br/><br/><label>Publisher. No.: </label> Sridhar Book Shop 
<br/><br/><label>Subjects--Personal Names: </label> Mathematics 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics