000 | 00503nam a22001337a 4500 | ||
---|---|---|---|
008 | 230524b |||||||| |||| 00| 0 eng d | ||
040 |
_aNational Science Library _cNational Science Library |
||
245 |
_aProceedings of symposium on drilling technology and engineering aids to geological exploration, Calcutta 12th to 15th February 198 _c/ Geological Survey of India |
||
260 |
_aNew Delhi: _bGovernment of India, _c1980 |
||
300 | _a637p. | ||
650 | _aGeological | ||
650 | _a | ||
942 |
_2udc _cPR |
||
999 |
_c58302 _d58302 |