AKYOL E, YENİNAR H. The Effects of Varroa (Varroa destructor) Infestation Level on Wintering Ability and Survival Rates of Honeybee (Apis mellifera L.) Colonies. Kafkas Univ Vet Fak Derg, 17 (3): 507-509, 2011. DOI: 10.9775/kvfd.2011.4268