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Apis mellifera (2) |
beekeeping (2) |
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monitoring (2) |
mortality (2) |
overwinter (1) |
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Apis mellifera (2) |
beekeeping (2) |
citizen science (2) |
colony losses (1) |
colony winter losses (1) |
forage sources (1) |
monitoring (2) |
mortality (2) |
overwinter (1) |
survey (2) |