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_aTD 793 _b7 K67 |
| 100 | 1 | _aKorsgaard, Christian | |
| 245 | 1 | 0 | _aJugando con la naturaleza |
| 260 |
_aCosta Rica : _bHorizontes Nature Tours, _c1995 |
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| 300 |
_a17 p. : _bil. ; _c21 cm. |
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| 440 | 0 | _aEscuelas verdes | |
| 650 | 4 |
_aBasuras y desperdicios - _xReciclaje - _xCosta Rica |
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| 650 | 4 | _aEcología | |
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_aLOGICAT _b20 _c20040112 _lCIA01 _h1411 |
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_aALEPH14 _b30 _c20051220 _lCIA01 _h1422 |
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