Lasalle J P <br/><br/>
Contributions to differential equations 
Lasalle J P 
 -  1963 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>22520 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B331, K31.2