Withers, John WIlliam <br/><br/>
Euclid's Parallel postulates :  its nature validity and plane in geometrical systems / 
by John WIlliam Withers 
 - Chicago :  Open Court Pub.,  c1905 
 - 192 p. ;  18 cm. 
<br/><br/> Thesis (Ph. D.) -- Yale University, philosophical faulty 
<br/><br/>Bibliography : p. 177-192 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry
<br/><br/><label>Dewey Class. No.: </label>513