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International Economic Association. World Congress, International Economic Association, and Shigeto Tsuru. Human Resources, Employment, and Development: Proceedings of the Sixth World Congress of the International Economic Association Held in Mexico City, 1980. London: Macmillan, 1983.

International Economic Association. World Congress, et al. Human Resources, Employment, and Development: Proceedings of the Sixth World Congress of the International Economic Association Held in Mexico City, 1980. Macmillan, 1983.