Alexandroff, Paul <br/><br/>
Elementary concepts of topology 

 - New York:   Dover publications,   1961. 
 - 57 p. :  il., graf.;  
<br/><br/>T+tulo original: Einfachste Grundbegriffe der Topologie 
<br/><br/><label>ISBN: </label>048660747X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TOPOLOGIA<br/>ECUACIONES ALGEBRAICAS
<br/><br/><label>Subjects--Index Terms: </label>MAINFOLDS