00318nam a2200121Ia 4500008004100000082001400041100002800055245004300083260003900126300000700165942000700172999001700179190709s9999    xx            000 0 und d  a510 H537H  aHighland, Esther Harris 0aHow and why wonder book of mathematics  aNew YorkbWonder Books, Inc.c1961  a48  cBK  c38634d38634