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  1. 61
    by Pascual, H.R
    Published 1969
    Book

    A primer on forest conservation
  2. 62
    Book

    Environmental conservation.
  3. 63
    by Nash, Roderick
    Published 1968
    Book

    The American environment readings in the history of conservation
  4. 64
    by Rienow, Robert 1907-
    Published 1967
    Book

    Moment in the sun a report on the deteriorating quality of the American environment
  5. 65
    by Smith, Frank Ellis 1918-
    Published 1966
    Book

    The politics of conservation
  6. 66
    Published 1962
    Book

    Studies on conservation on natural resources major papers of the Second National Conference on Conservation to be held on January, 1963 in Manila, under the joint sponsorship of Department of Agriculture & Natural Resources, Philippine Constitution Association.
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