00306nam a2200109Ia 4500008004100000082002000041100001800061245003100079260003700110300001100147490003800158260128b        |||||||| |||| 00| 0 eng d  a511.3bSi577.ES  aSigler, L. E.  aExercises in set theoryb/  aNew Jersey:bVan Nostrand,c1966  a134 p.  aVan nostrand Mathematical studies