1. Larson D.J., Alarie Y. & Roughley R.E.: Predaceous Diving Beetles (Coleoptera: Dytiscidae) of the Nearctic Region, with Emphasis on the Fauna of Canada and Alaska Creator: Hájek, Jiří and Boukal , David Type: article, model:article, and TEXT Language: English Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public