000 00390nam a2200145Ia 4500
008 140224s9999 xx 000 0 und d
082 _a621.95(02) L7
100 _aChugh, Chandra Parkash.
245 _aDrilling technology hand book
260 _aNew Delhi
_bOxford & IBH
_c1977
300 _axii,460p.
600 _aChandra Parkash Chugh
650 _aDrilling,Hand books.
942 _cBK
999 _c92614
_d92614