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- Biòpsia per aspiració 4
- BiPaDi 2
- Bipartidisme 3
- Bipolar disorders 2
- Bipolar transistors 3
- Birational geometry 4
- Bird watching 1
- Birds 44
- Birds -- Migration 1
- Birds diseases 3
- Birds migration 30
- Birds nests 2
- Birds of prey 4
- Birdsongs 3
- Birkhoff's theorem 1
- Birth control 9
- BIRTH-WEIGHT 1
- Birthparents 2
- Bisbal d'Empordà (Catalonia) 1
- Bisbal d'Empordà (Catalunya) 1