00278nam a2200121Ia 450000500170000000800410001704100080005808200150006610000160008124500240009726000260012130000090014720260720174633.0260720s2006    xx            000 0 und d  aeng  a510.7 COLI  aCollins, Do  aInstant facts maths  aLondonbCollinsc2006  a155p