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| 020 | _a0861878426 | ||
| 037 | _cGeneral Book | ||
| 040 |
_aRTL _cRTL _beng |
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| 041 |
_2eng _aeng |
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| 082 | _aX0gF, N0 | ||
| 100 |
_aSigurdson Jon _9253667 |
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| 245 | 0 | _aMeasuring the dynamics of technological change | |
| 260 |
_aLondon _bPinter _c1990 |
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| 300 |
_axvi,227p _ccm. |
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| 500 | _aBibliography chapterwise | ||
| 650 | _aEconomic IRT Technology | ||
| 942 |
_hX0gF, N0 _cGB _2CC |
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| 999 |
_c577117 _d577117 |
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