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  1. 1
    Published 1990
    “...GF 75 .E12...”
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    The Earth as transformed by human action : global and regional changes in the biosphere over the past 300 years /
  2. 2
    Published 1991
    “...GF 75 .E61...”
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    Environment in peril /
  3. 3
    by Brown, A. D.
    Published 2003
    “...GF 75 .B877 2003...”
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    Feed or feedback : agriculture, population dynamics and the state of the planet /

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