000 00316nam a2200133Ia 4500
008 210901s1972 xx 000 0 eng d
082 _a530 BLA
245 0 _aMagnetic fields
260 _aEngland
_bPenguin Books ltd
_c1971
300 _a130
650 _aPhysics
700 _aOgborn Joan ltd
942 _2ddc
_cBK
999 _c11187
_d11187