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  1. By: U.S. Fish and Wildlife Service. Office of Biological Services. - Biological Services Program (U.S.)
    Publication info: [Washington]Fish and Wildlife Service, U.S. Dept. of the Interior.
    Holding Institution: MBLWHOI Library
  2. By: Cowardin, Lewis M. - U.S. Fish and Wildlife Service. - Biological Services Program (U.S.)
    Publication info: Washington, D.C. :Fish and Wildlife Service, U.S. Dept. of the Interior,1979.
    Holding Institution: MBLWHOI Library
  3. By: Erwin, R. Michael. - Korschgen, Carl E. - Coastal Ecosystems Project. - Biological Services Program (U.S.)
    Publication info: Washington, D.C. :The Service,1979.
    Holding Institution: MBLWHOI Library
  4. By: Erwin, R. Michael. - Coastal Ecosystems Project. - Biological Services Program (U.S.)
    Publication info: Washington, D.C. :Fish and Wildlife Service,1979.
    Holding Institution: MBLWHOI Library