Congruence of sets and other monographs - Sierpiński, Wacław 1882-1969; Klein, Felix 1849-1925 (Chelsea Publ. Co., 1954)
Nebentitel: Monographs
Enth. u.a.: On the congruence of sets and their equivalence by finite decomposition / by W. Sierpiński. - The mathematical theory of the top / by F. Klein