Tychonoff A N <br/><br/>
Differentialgleichungen der mathematischen physik 

 -  1959 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>22459 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B330C, J9