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  1. 4021

    Man and the environment a bibliography of selected publications of the United Nations system, 1946-1971 QH541 .Z9 W per Winton, Harry N. M.

    Publicat 1972
    Llibre

    Man and the environment a bibliography of selected publications of the United Nations system, 1946-1971 QH541 .Z9 W
  2. 4022

    Environment week '72, symposium on our environment a perspective of environment affairs and issues in the Philippines.

    Publicat 1972
    Llibre

    Environment week '72, symposium on our environment a perspective of environment affairs and issues in the Philippines.
  3. 4023

    Conserving life on earth. per Ehrenfeld, David W.

    Publicat 1972
    Llibre

    Conserving life on earth.
  4. 4024

    To live on earth man and his environment in perspective. per Brubaker, Sterling

    Publicat 1972
    Llibre

    To live on earth man and his environment in perspective.
  5. 4025

    The shrinking outdoors per Jennings, Gary

    Publicat 1972
    Llibre

    The shrinking outdoors
  6. 4026

    The careless technology ecology and international development

    Publicat 1972
    Llibre

    The careless technology ecology and international development
  7. 4027

    Plan for the creation of a historic environment in Tombstone, Arizona per Garrett, Billy C.

    Publicat 1972
    Llibre

    Plan for the creation of a historic environment in Tombstone, Arizona
  8. 4028

    Legislative principles of soil conservation. per Christy, Lawrence C.

    Publicat 1972
    Llibre

    Legislative principles of soil conservation.
  9. 4029

    The earth and human affairs. per National Research Council (U.S.). Committee on Geological Sciences

    Publicat 1972
    Llibre

    The earth and human affairs.
  10. 4030

    World Eco-crisis; international organizations in response per Kay, David A

    Publicat 1972
    Llibre

    World Eco-crisis; international organizations in response

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