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| 050 | 0 | 4 |
_aQH 541 _b13 A74 |
| 100 | 1 |
_aArana, Federico _d1942- |
|
| 245 | 1 | 0 | _aEcología para principiantes |
| 250 | _a1a ed. | ||
| 260 |
_aMéxico : _bTrillas, _c1984 |
||
| 300 |
_a138p. : _bil. ; _c23 cm. |
||
| 650 | 4 |
_aEcología - _xEstudio y enseñanza |
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| 903 |
_aLOGICAT _b20 _c20040112 _lCIA01 _h1407 |
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