Hurewicz, Witold  1904-1956. <br/><br/>
Lectures on ordinary differential equations. 

 -  Wiley/Chapman & Hall,  1958. 
 - 122 p.:  ill.;  24 cm. 
<br/><br/><label>Nat. Bib. No.: </label>GB58-12101 
<br/><br/><label>Dewey Class. No.: </label>515.35  / H963l