PAWLIKOWSKI, Tadeusz and PAWLIKOWSKI, Krzysztof. PHENOLOGY OF SOCIAL WASPS (HYMENOPTERA: VESPINAE) IN THE KUJAWY REGION (NORTHERN POLAND) UNDER THE INFLUENCE OF CLIMATIC CHANGES 1981–2000. Bulletin of Geography. Physical Geography Series. Online. 1 June 2009. No. 1, pp. 125-134. [Accessed 18 July 2024]. DOI 10.2478/2314.