Lobachevskii, N. I.  1792-1856, <br/><br/>
Geometrical researches on the theory of parallels / 
translated from the original by Georges Bruce Halsted 
 - # new ed. 
 - 50 páginas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometría no euclidiana
<br/><br/><label>LC Class. No.: </label>QA685  / L62