000 00291nam a2200121Ia 4500
008 180710s9999 xx 000 0 und d
020 _a74117
082 _a622.15
_bGEO
245 _aGEOPHYSICAL electrical propecting methods
260 _a[n.l.]
_b[S.n.]
_c0
300 _a125 p.
942 _cS
999 _c64929
_d64929