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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Eisler, Ronald, - U.S. Fish and Wildlife Service - Patuxent Wildlife Research Center.
    Publication info: [Washington, D.C.?], Fish and Wildlife Service, U.S. Dept. of Interior, [1986]
    Holding Institution: MBLWHOI Library
  2. By: Eisler, Ronald, - U.S. Fish and Wildlife Service - Patuxent Wildlife Research Center.
    Publication info: Laurel, MD, The Service, 1986
    Holding Institution: MBLWHOI Library