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  1. 1
    by Waldron, Ingrid
    Published 1973
    “...GF 75 .W167...”
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    Environment and population : problems and solutions /
  2. 2
    by Brown, A. D.
    Published 2003
    “...GF 75 .B877 2003...”
    Book
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    Feed or feedback : agriculture, population dynamics and the state of the planet /

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