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020 _a0878148876
040 _aUPES LIBRARY
_bEnglish
082 _a622.338
_b0681 JOH
100 _aJohnstion, Daniel
_93778
245 _aInternational exploration economics risk, and Contract analysis
260 _aOklahoma:
_bPennwell,
_c2003
300 _a401p.
650 _aManagement
_939701
650 _aPetroleum Economics
_927997
942 _cBK