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| 082 | 0 | _a153.23 579pri | |
| 100 | 1 | _aPiaget, Jean | |
| 245 | 1 | 4 | _aThe principles of genetic epistemology |
| 250 | _a1ra. ed. | ||
| 260 |
_aLondres : _bRoutledge & Kegan Paul, _c1972. |
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| 300 |
_a100 p. : _bil., tbls. |
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| 651 | 4 | _aDOCUMENTOS TEORICOS O METODOLOGICOS | |
| 700 | 1 |
_aMays, Wolfe _etr. |
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