Takács, M. and Oláh, J. 2018. The effect of the queen’s age on the Varroa mite (Varroa destructor) burden of honey bee (Apis mellifera L.) colonies. Acta Agraria Debreceniensis. 75 (Dec. 2018), 83–87. DOI:https://doi.org/10.34101/actaagrar/75/1651.