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| 020 | _a8176293520 | ||
| 037 | _cGeneral Book | ||
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_aRTL _cRTL _beng |
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| 041 |
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| 082 | _aX:89P:(B), P1 | ||
| 100 | _aSunil Kumar | ||
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_aProductivity and factor substitiution _b Theory and |
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| 260 |
_a New Delhi _bDeep and Deep Publication India _c2001 |
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| 300 |
_ax,274p Bib p 251-72 _ccm. |
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| 650 | _aProduction Engeeniring | ||
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_hX:89P:(B), P1 _cGB _2CC |
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