000 00403nam a22001577a 4500
008 150812b xxu||||| |||| 00| 0 eng d
020 _a9781593700720
050 _aTN 871.2
_b.A92
100 _aAzar, J.C.
245 _aDrilling engineering
260 _aOklahoma
_bPennwell
_c2007
300 _ax, 486p.
650 _aOil well Drilling, Gas well Drilling
700 _aSamuel, G.R.
942 _2lcc
_cBK
999 _c2828
_d2828