000 00355nam a2200157Ia 4500
003 IN-KoSCC
082 _a538.7
_bC466Ea
100 1 _aChampan ,Sydney.
245 1 _aEarth's magnetism.
250 _a2nd.ed.
260 _aLondon, New York
_bMathune. John wiley
_c1951
300 _axi,127p.
_bill.diagrs.
500 _a7
653 _aphysics
942 _cBK
999 _c1630
_d1630