Proceedings of the 15th Scandinavian Congress, Oslo, 1968 
Ed. by K. E. Aubert, W. Ljunggren. 
 - Berlin ;  New York :  Springer-Verlag,  1970. 
 - 162 p.  ill. 
 - Lecture notes in mathematics / Ed. by A. Dold, B. Eckmann  118 .
 - Lecture notes in mathematics (Springer-Verlag)  118 .
<br/><br/>Includes bibliogr. references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Congresses