Sell George R <br/><br/>
Topological dyanamics and odinary differential equations 

 -  1971 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>22776 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B331, L11