EXTINCTION (BIOLOGY)
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BTVIABILITY, SURVIVAL, EXTINCTION (BIOLOGY)
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UDC57.022,5
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Descriptor GERAUSSTERBEN (BIOLOGIE)
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Descriptor ENGEXTINCTION (BIOLOGY)
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Descriptor FREEXTINCTION (BIOLOGIE)
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RTEXTINCTION (PALAEONTOLOGY)
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RTLIVING FOSSILS (ANIMALS AND PLANTS)