000 00249nam a22000857a 4500
008 210301b ||||| |||| 00| 0 eng d
050 _aQC827 .B53
245 _aLectures on rock magnetism
_cBLACKETT, P.M.S
942 _2lcc
_hQC827 .B53 1956
999 _c1095
_d1095