DRONES (APICULTURE)
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BTBEE KEEPING + BEE BREEDING + APICULTURE
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UDC638.121.3
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Descriptor GERDROHNEN (BIENENZUCHT)
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Descriptor ENGDRONES (APICULTURE)
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Descriptor FREFAUX BOURDONS (APICULTURE)
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Variant ENGBEES/DRONES (APICULTURE)