Wilczynski, E J  <br/><br/>
Projective differential geometry of curves and ruled surfaces /  
E J Wilczynski 
 - New York :  Pergamon Press,   1905  
 - xiii, 298 p. :  ill. ;   20 cm. 
<br/><br/> includes index  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Projective differential geometry. 
<br/><br/><label>Dewey Class. No.: </label>515   / WIP 1905