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| 245 | 1 | 3 | _aEl tesoro de la tecnologĂa |
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_aBuenos Aires : _bCodex, _c1972 |
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_a10 v. _b: ilus. |
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_aCiencia _xDiccionarios. _923114 |
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_aTecnologĂa _xDiccionarios. _9111942 |
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