000			00300nam a2200133 4500
008			160616s 000 0
245			_aGeomagnetism
100			_aChapman, Sydney
100			_aBartels, Julius
500			_aB75 J1.1 J1.2
942			_cBK _2BK8811
080			_a538 CHA
080			_a538 CHA
999			_c8811 _d8811