Discontinuous groups and riemann surfaces 
edited by Leon Greenberg 
 - Princeton, N.J.  Princeton University Press   1974 
 - ix,443p.; 24 cm. -- 
 - Annals of mathematics studies ; no.79 .
<br/><br/> Proceedings of the 1973 conference at the university of Maryland 
<br/><br/><label>Dewey Class. No.: </label>515.223  / GRE