000 003270000a22001330004500
008 151112t1979 xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a33
_bM4
942 _cBK
100 _aMegill, Robert E.
245 _aAn introduction to exploration economics
250 _a2d ed.
260 _aTulsa
_bPenn Well
_c1979
999 _c140938
_d140938