Dydak, Jerzy  <br/><br/>
Lecture Notes in Mathematics   688 
/ by Jerzy Dydak  
 - Germany:  Springer-Verlag Berlin Heidelberg,  1978. 
 - vi, 149p. 
<br/><br/><label>ISBN: </label>0-387-08955-1 
<br/><br/><label>Dewey Class. No.: </label>514.2  / DYD/L