Wilczynski, E. J.,  1876-1932 <br/><br/>
Projective differential geometry of curves and ruled surfaces / 
by E. J. Wilczynski 
 - New York :  Chelsa Pub.,  [1961] 
 - viii, 298 p. ;  21 cm. 
 - Chelsa scientific books .
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> USD 6.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry, Differential<br/>Curves
<br/><br/><label>Dewey Class. No.: </label>516.74