00314nam a2200121Ia 450000500170000000800410001704100080005808200130006610000200007924500450009926000400014430000080018420260720174604.0260720s2006    xx            000 0 und d  aeng  a500 CLAT  aClark, John O E  aElectricity & forces (mad about science)  aLondonbBrown Reference Groupc2006  a64p