00369nam a2200157Ia 4500003000500000008004100005020001800046040001900064082000700083100002300090245003000113260003900143300000900182365000800191546001200199STCL221019s9999    xx            000 0 und d  a9780486222561  aSTCLcSTCLbEN  222  aFriedland, Aaron J 0aPuzzles in math and logic  bDover PublicationsaNew Yorkc1970  a66 p  b489  aEnglish