Sierpinski, W, et al.
Congruence of sets and other monographs - New York Chelsea Publishing Company 1967 - 441 - AMS chelsea publishing ; 02209 .
9780828402095
512.54 SIE
Congruence of sets and other monographs - New York Chelsea Publishing Company 1967 - 441 - AMS chelsea publishing ; 02209 .
9780828402095
512.54 SIE