000 | 00553nam a22001337a 4500 | ||
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008 | 230616b |||||||| |||| 00| 0 eng d | ||
040 |
_aNational Science Library _cNational Science Library |
||
080 |
_aT 622.285:621.316.57 _bN2 |
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245 |
_aDevelopment of sensors and microprocessor based switching system for instrinsically safe power supply for underground use _c/ Council of Scientific & Industrial Research |
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260 |
_aNew Delhi: _bCouncil of Scientific & Industrial Research, _c1990 |
||
300 | _a39p. | ||
650 | _aScience | ||
942 |
_2udc _cREP |
||
999 |
_c56412 _d56412 |