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| 005 | 20220918194517.0 | ||
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| 024 | _a79,867 | ||
| 037 | _cTextual | ||
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_aARTS _cARTS _beng |
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_2eng _aeng |
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| 082 | _aS:43, L4-;1 | ||
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_aDavis Robert H _985346 |
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| 245 | 0 |
_cDavis Robert H _aLearning system design _b an approach to the improvement of instruction |
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| 260 |
_aNew York _bMcGraw-Hill _c1974 |
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| 300 |
_aix,342p. _ccm. |
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| 650 | _aPSYCHOLOGY | ||
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