Lobatschewsky, N. <br/><br/>
Etudes gemetriques sur la theorie des paralleles / 
by N. Lobatschewsky and Par J. Houel 
 - Paris :  Gauthier-Villars,  1866 
 - iv, 42 p. ;  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential topology<br/>Geometry<br/>Parallel processing
<br/><br/><label>Dewey Class. No.: </label>513.84