00347nam a2200133Ia 450000500170000000800460001703700290006304000200009204100130011208400230012524500470014826000090019530000090020420250508151310.0008  250505s9999    xx            000 0 eng d  aBooks to be hide in OPAC  aFEDLbengcFEDL  aeng2eng  a372.8, MAK/OqFEDL 0aMaking sure of arithmetic in the classroom  c1954  a48p.