Contributions to geometry:  proceedings of the Geometry-Symposium held in Siegen, June 28, 1978 to July 1, 1978/ 
edited by Jürgen Tölke and Jörg M. Wills. 
 - Basel ;  Boston:  Birkhäuser,  c1979. 
 - 406 p.:  ill.;  25 cm. 
<br/><br/> English or German. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>3764310480 
<br/><br/><label>LCCN: </label>79026877 //r83 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry---Congresses.
<br/><br/><label>Dewey Class. No.: </label>516  / C764