Keys to adults of the water beetles of Britain and Ireland. (Part 1, Coleoptera: Hydradephaga: Gyrinidae, Haliplidae, Paelobiidae, Noteridae and Dytiscidae) / Garth N. Foster, Laurie E. Friday ; colour plates prepared by Jiří Hájek   .  St. Albans : Telford :  Royal Entomological Society ; Field Studies Council,  c2011 . iv, 144 s.