000 00334nam a2200133Ia 4500
001 15296
008 220811s1972 ###||||g |||| ||spa d
082 _a574.5
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100 _aEhrenfeld, David W.
_915110
245 0 _aConservacion y Biologia
264 _c1972
942 _cBK
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035 _a574.5 -E33-Conservacion y Biologia-
999 _c11891
_d11891