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| 024 | _a88813 | ||
| 037 | _cThesis and Dissertations | ||
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_aRTL _cRTL _beng |
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| 082 | _a"X9(HZ551):26.216.N8, M3" | ||
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_aJohar Neelam _9390730 |
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_aUniversity of Delhi. Deptt of Economic. _9390731 |
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| 245 | 0 | _aDeterminants of costs and productivity in coal min | |
| 260 |
_aDelhi _bUniversity of Delhi India _c1983 |
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| 300 |
_a76p. Bib p 75-76 _ccm. |
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| 650 | _aMinings | ||
| 700 |
_aUniversity of Delhi. Deptt of Economic. _9390732 |
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_h"X9(HZ551):26.216.N8, M3" _cCC |
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