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National Pollen and Aerobiological Research Unit, Institute of Science and the Environment, University of Worcester, Henwick Grove, WR2 6AJ, Worcester, U.K.
National Pollen and Aerobiological Research Unit, Institute of Science and the Environment, University of Worcester, Henwick Grove, WR2 6AJ, Worcester, U.K.
Laboratory of Paleobotany, Department of Stratigraphical Geology, Institute of Geological Sciences, University of Wroclaw, Cybulskiego 30, 50-205 Wroclaw, Poland
National Pollen and Aerobiological Research Unit, Institute of Science and the Environment, University of Worcester, Henwick Grove, WR2 6AJ, Worcester, U.K.