60512
Brown, Harley P.
Aquatic dryopoid beetles )Coleoptera( of the United States
]Washington
U.S. Environmental Protection Agency[; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
1976
ix, 82 p.: ill
Biota of freshwater ecosystems identification manual
Water pollution control research series
no.6
Prepared by the Oceanography and Limnology Program, Smithsonian Institution, for the Environmental Protection Agency under contract no. 14-12-894
Bibliography: p. 69-71
by Harley P. Brown
2nd prin
United States -- Identification ، Beetles
QL
583
.
B76
1976
AU
CO Oceanography and Limnology Program )Smithsonian Institution(
CO United States. Environmental Protection Agency
TI
SE
SE Water pollution control research series
CL
