000 00389nam a2200157Ia 4500
008 170101s1957 xx 000 0 und d
082 _a338.476 655 Z-7C
100 _aZIMMERMANN, Erich W
245 0 _aConservation in the production of petroleum
260 _bNew Haven
_c1957
300 _a417p
650 _aPETROLEUM
653 _aPETROLEUM
653 _aPETROLEUM
942 _2ddc
_cB
999 _c8137
_d8137