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_aDocumentation and information: services, techniques and systems _cB Guha |
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_aCalcutta _bThe World Press Private Ltd. _c1978 |
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| 300 | _a369 p. | ||
| 650 | _aDocumentation | ||
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_aInformation _vTechniques |
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_2ddc _cBK |
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_c5641 _d5641 |
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