Contributions to extension theory of topological structures:  Proceedings of the symposium held in Berlin, August 14-19, 1967/ 
Scientific ed.: J. Flachsmeyer, H. Poppe, F. Terpe. 
 - Berlin:  Deutscher Verlag der Wissenschaften,  1969. 
 - 279 p.;  25 cm. 
<br/><br/> English, French, German or Russian.  Sponsored by Institut für Reine Mathematik der Deutschen Akademie der Wissenschaften zu Berlin and Mathematische Gesellschaft der DDR. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>LCCN: </label>71422371 //r963 
<br/><br/><label>Nat. Bib. No.: </label>GDB*** 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Topology.
<br/><br/><label>Dewey Class. No.: </label>514  / C764