Ecological principles for economic development/ by Dasmann, Raymond Frederic, 1919-, Milton, John P., Freeman, Peter H.

The careless technology ; ecology and international development : a record of the conference/ by Conference on the Ecological Aspects of International Development (1968 : Airlie House, Warrenton, Virginia), Farvar, M. Taghi, Milton, John P., Washington University. Center for the Biology of Natural Systems