00373nam 2233381 450000100060000000300230000600500090002900800410003808200110007910000240009026000500011430000160016424500610018033381StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  a372.72 aPatricia S Davidson b(U.S.A): Cuisenaire company Of America c1978 a96p: 28 c.m aOne - Digit Addition and Subtraction with Cuisenair Rods