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| 040 | _cJayakar Knowledge Resource Centre | ||
| 100 | _aWelford, A T | ||
| 245 | 0 | _aErgonomics of automation | |
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_bMAJESTY S STATIONERY OFFICE _aLONDON _c1950 |
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| 653 | _aMATHEMATICS | ||
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