United Nations. Dept. of Social Affairs. (1952). In-service training in social welfare. s.n.
Citace podle Chicago (17th ed.)United Nations. Dept. of Social Affairs. In-service Training in Social Welfare. New York: s.n, 1952.
Citace podle MLA (9th ed.)United Nations. Dept. of Social Affairs. In-service Training in Social Welfare. s.n, 1952.
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