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| 008 | 971013s1970 us a r 00010 eng d | ||
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_a581.5 _bS2 |
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_aScientific American _9103326 |
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| 245 | 1 | 4 | _aThe biosphere |
| 260 |
_aSan Francisco : _bFreeman, _c1970 |
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| 300 |
_a134 p. _b: ilus. |
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_aBATCH-UPD _b10 _c20130110 _lUCH01 _h1909 |
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_aCONVERSION _b10 _c20130109 _lUCH01 _h1330 |
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| 650 | 1 | 4 |
_aEcología animal. _935170 |
| 650 | 1 | 4 | _aEcología humana. |
| 650 | 1 | 4 |
_aEcología vegetal. _935188 |
| 650 | 1 | 4 |
_aEcosistema. _935290 |
| 650 | 1 | 4 |
_aRecursos naturales _xConservación. |
| 901 | _aBK | ||
| 942 | _cLIBRO | ||
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