 | Up a level |
Potts, Simoon G.; Roberts, Stuart P.M.; Dean, Robin; Marris, Gay; Brown, Mike A.; Jones, Richard; Neumann, Peter; Settele, Josef (2010). Declines of managed honey bees and beekeepers in Europe. Journal of apicultural research, 49(1), pp. 15-22. Cardiff: International Bee Research Association IBRA 10.3896/ibra.1.49.1.02
