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| 040 | _aAranzadi Liburutegia | ||
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_aO'Brien, Stephen J. _91427919 _d1944- |
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_aBureaucratic Mischief : Recognizing Endagered Species and Subespecies / _cStephen J. O'Brien and Ernst Mayr. |
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_a[S.l.] : _b[s.n.], _c1991 |
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_9262799 _aMayr, Ernst _d1904-2005 |
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