Citation: Illies, J. 1978 Helodidae and Psephenidae. 3pp. ,
Pages: 323-325
Editor: J. Illies (ed.)
Book/Symposium Title: Limnofauna Europaea
Edition: J. Illies
Keywords: Beetle, Coleoptera, Freshwater, Helodidae, Insect, Psephenidae