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020 _a46581
082 _a551
_bBHA
_223
100 _aBHATTACHARYA, P.K.
245 _aDirect current geoelectric sounding:
_b principles and interpretation
_cby P.K. Bhattacharya, H.P.Patra
260 _aLondon
_bElsevier pub.
_c1968
300 _aix, 135 p.-
440 _aMethods in geochemistry and geophysics
500 _aIncludes references, index.
509 _aNS
650 _aGeology
942 _cS