Human ecology.
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Bio-meditation / Jack Gariss.
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The Ocean, the environment, and man / Jacques Cousteau.
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The Growth of population / produced by Don Roeck.
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For unto us a child is born / written and read by S.P.R. Charter.
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Is man a planetary disease? / Ian McHarg.
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Are man and nature on a collision course? / Dr. George Bergstrom.
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Man on earth / S.P.R. Charter.

