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  1. 1
    Published 1993
    Book

    Saving the earth the Philippine experience.
  2. 2
    by Kupchella, Charles E.
    Published 1993
    Book

    Environmental science living with in the system of nature.
  3. 3
    by Botkin, Daniel B.
    Published 1987
    Book

    Environmental studies earth as a living planet
  4. 4
    by Turk, Jonathan
    Published 1980
    Book

    Introduction to environmental studies
  5. 5
    by Newell, Malcolm
    Published 1972
    Book

    The value of life selected readings on environment, pollution, and conservation
  6. 6
    by McCoy, J. J. 1917-
    Published 1970
    Book

    Shadows over the land
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