000 002670000a22001210004500
245 _aDiamond drilling
100 _aChugh, Chandar Parkash
260 _aNew Delhi
_bOxford & IBH
_c1971
300 _a484 p.
080 _a550.822
_bC5
041 _aEN
942 _cBK
999 _c101906
_d101906