000 00326nam a2200121Ia 4500
001 23630
008 170722s9999 xx 000 0 und d
100 _aHowell Jr, Benjamin F.
245 _aIntroduction to geophysics /
260 _c1959.
490 _aInternational series in the earth sciences ed by Robert R
942 _cGEN
999 _c56046
_d56046