Aquatic dryopoid beetles (Coleoptera) of the United States. Biota of Freshwater Ecosystems: Identification Manual, no. 6.
By Brown, H.P.
Full Text - Biodiversity Heritage Library (BHL)
Brown, H.P. 1972. Aquatic dryopoid beetles (Coleoptera) of the United States. Biota of Freshwater Ecosystems: Identification Manual, no. 6. Water Pollution Control Research Series, EPA, Washington, D.C. ix + 82 pp.