Ioffe A D <br/><br/>
Theory of extreme problems 

 - Amsterdam  North- Holland Publisher         1979 
 - xii; 460p.  cm. 
<br/><br/><label>Standard No.: </label>24671 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B42, L9