Alo, Richard A. <br/><br/>
International conference on Topo 72 - General topology and its applications 2, Pittsburgh, 1972. 

 - Berlin:  Springer-Verlag,  1974. 
 - 651 p.: 
 - Lecture Notes in Mathematics;  378 .
 - Lecture notes in mathematics (Springer-Verlag);  378. .