TY - BOOK TI - Freshwater polychaetes (Annelida) of North America UR - https://www.biodiversitylibrary.org/item/22585 PB - U.S. Environmental Protection Agency]; for sale by the Supt. of Docs., U.S. Govt. Print. Off CY - [Washington PY - 1972 N1 - Prepared by the Oceanography and Limnology Program, Smithsonian Institution, for the Environmental Protection Agency under contract no. 14-12-894. AU - Foster, Nancy (Nancy Marie), AU - Oceanography and Limnology Program (Smithsonian Institution) AU - United States. Environmental Protection Agency. KW - Identification KW - North America KW - Polychaeta ER -