00575nam a2200205Ia 450000500170000000800410001702000180005804100080007608200090008410000230009324500420011625000060015826400650016430000320022965000060026165500160026770000300028370000240031370000320033720260922095801.0260922s9999    xx            000 0 und d  a0-88385-519-4  aeng  a510.1 aBARBEAU, Edward J.10aFive Hundred Mathematical Challenges   a0  aWashington DCbThe Mathematical Association Of Americac1995  axi , 227 hlm.bilus.c28 cm 4a0  aGrade 10-121 aMurray S. Klamkineauthor1 aRoger Horn eeditor1 aWilliam O.J. Moser eauthor