Title: Aquatic dryopoid beetles (Coleoptera) of the United States /
Authors: Brown, Harley P.; Oceanography and Limnology Program (Smithsonian Institution); United States.
Publisher: [U.S. Environmental Protection Agency] ;
Year: 1972
Subjects: Coleoptera; Beetles United States Identification.; Coleoptera; Coléoptères États-Unis Identification.; Beetles; Coleoptera.; United States; United States