Landkof N S <br/><br/>
Foundations of morden potential theory. 
Landkof N S 
 -  1972 
<br/><br/><label>Standard No.: </label>21927 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B83, L2