Zur Wasserkäferfauna Nordwestdeutschlands, Teil II: Palpicornia-Hydrophiloidea (Hydraenidae, Hydrochidae, Helophoridae, Hydrophilidae) und Diversicornia (Dryopidae, Elminthidae, Helodidae) (Insecta, Coleoptera)
Published in Spixiana, in 1981, in volume 4, pages 175-189
Date published:1981