Aquatic dryopoid beetles (Coleoptera) of the United States
By: by Harley P. Brown.
Contributors: Oceanography and Limnology Program (Smithsonian Institution); United States. Environmental Protection Agency.
Series: Biota of freshwater ecosystems identification manual -- no. 6; Water pollution control research series
Publisher: U.S. Environmental Protection Agency]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1972
Place of publication: [Washington
Language: eng
Number of pages: 82
Subjects: Beetles -- United States -- Identification