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  1. Principles of environmental science [by] Kenneth E.F. Watt.
    By: Watt, Kenneth E. F.,
    Publication info: New York,McGraw-Hill[1973]
    Contributed by: Internet Archive (archive.org)
    Subjects: Écologie  Ecology  Environment  Environmental policy  Human ecology  
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  2. A social ecological bibliography, [by] Joel C. Snell and R. Gary Dean.
    By: Snell, Joel C - Dean, R Gary.
    Publication info: Monticello, Ill.[Council of Planning Librarians]1974.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Bibliography  Ecology  Human ecology  Regional planning  
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