(1970). Seminar on the Realization of Economic and Social Rights with Particular Reference to Developing Countries, Lusaka, Zambia, 23 June - 4 July 1970: Organized by the United Nations Division of Human Rights in co-operation with the Government of Zambia. New York: United Nations.

Seminar On the Realization of Economic and Social Rights With Particular Reference to Developing Countries, Lusaka, Zambia, 23 June - 4 July 1970: Organized By the United Nations Division of Human Rights in Co-operation With the Government of Zambia. New York: United Nations, 1970.

Seminar On the Realization of Economic and Social Rights With Particular Reference to Developing Countries, Lusaka, Zambia, 23 June - 4 July 1970: Organized By the United Nations Division of Human Rights in Co-operation With the Government of Zambia. New York: United Nations, 1970.