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  1. 1
    by Simon, Julian L.
    Published 1981
    Book

    The ultimate resource.
  2. 2
    by Henry, Louis
    Published 1976
    Book

    Population, analysis and models.
  3. 3
    by Turk, Amos
    Published 1972
    Book

    Ecology, pollution, environment
  4. 4
    by Ehrlich, Paul R.
    Published 1968
    Book

    The population bomb
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