BIOSPHERE (NATURAL HISTORY)
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BTNATURE STUDIES + NATURAL HISTORY
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BTECOLOGY
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UDC502.5
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Descriptor GERBIOSPHÄRE (NATURKUNDE)
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Descriptor ENGBIOSPHERE (NATURAL HISTORY)
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Descriptor FREBIOSPHÈRE (HISTOIRE NATURELLE)
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Variant GERBELEBTE NATUR (NATURKUNDE)
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Variant GERÖKOSPHÄRE (NATURKUNDE)
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Variant GERNATUR/BELEBTE NATUR (NATURKUNDE)
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Variant ENGLIVING NATURE (NATURAL HISTORY)
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Variant ENGNATURE/LIVING NATURE (NATURAL HISTORY)
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Variant ENGECOSPHERE (NATURAL HISTORY)
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Variant ENGBIOTA (NATURAL HISTORY)
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Variant FREÉCOSPHÈRE (HISTOIRE NATURELLE)
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NTBIOSPHERIC ENVIRONMENT (ENVIRONMENTAL POLLUTION AND PROTECTION)
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NTBIOSPHERE RESERVES (NATURE CONSERVATION)