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Ancillary activities - drs. WJ (Wouter Jan) Strietman
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01-12-2005
Harbour Porpoise photo identification & abundance surveys Stichting Rugvin - 1) Photo-identification of Harbour Porpoises in the Oosterschelde Estuary; 2) Cetacean abundance in the Southern North Sea on the fixed-route transect of the Hoek of Holland-Harwich ferry |