00284nam a2200109Ia 450000500170000000800410001708200150005810000190007324500300009226000440012230000080016620260224040845.0260224s9999||||xx |||||||||||||| ||und||  a621.31 BLE  aBleaney, B.I.  0aElectricity and magnetism  aLondon: Oxford University Press, c1976  a762