HUREWICZ Witold <br/><br/>
Lectures on ordinary differencial equations 
HUREWICZ Witold 
 - Cambridge  MIT press           1958 
 - xvii,122p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>B33, J8/SC