00344nam a2200121Ia 4500082001900000100000700019245006400026260002200090300000600112500009400118500000500212700000500217  a510.9bC749.CS  ad  aCongruence of sets and other monographsbcBy Sierpinski W.  aNew YorkbChelsea  a   a"Sierpinski, W.; on the congruence of sets and their equivalence by finite decompositio".  a  a