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- biosphere reserve 2
- biosphere reserves 1
- biota 1
- biotechnology 1
- biotesting 2
- biotic and landscape diversity 1
- biotic control 1
- biotic diversity 2
- biotic interactions 1
- biotic self-regulation 1
- biotop 1
- biotope 1
- biotopes 1
- biotops 1
- bird community 1
- birds 2
- bird’s cenosis 1
- birth rate 4
- bishop 2
- Bishop Anthony (Khrapovitsky) 1