(1977). Study of alternative economic strategies for the development of arid and semi. arid: A sumamry report on a conference, jointly organization by the UNited Nations Institute for training and Research and the California Department of water Resources, held at Sacramento, California, United States of America 31 May to 10 june 1977. New York: United Nations.

Study of Alternative Economic Strategies for the Development of Arid and Semi. Arid: A Sumamry Report On a Conference, Jointly Organization By the UNited Nations Institute for Training and Research and the California Department of Water Resources, Held At Sacramento, California, United States of America 31 May to 10 June 1977. New York: United Nations, 1977.

Study of Alternative Economic Strategies for the Development of Arid and Semi. Arid: A Sumamry Report On a Conference, Jointly Organization By the UNited Nations Institute for Training and Research and the California Department of Water Resources, Held At Sacramento, California, United States of America 31 May to 10 June 1977. New York: United Nations, 1977.