League of Nations. Committee of Statistical Experts. (1938). Statistics of the gainfully-occupied population; definitions and classifications recommended by the Committee of Statistical Experts.
Citace podle Chicago (17th ed.)League of Nations. Committee of Statistical Experts. Statistics of the Gainfully-occupied Population; Definitions and Classifications Recommended by the Committee of Statistical Experts. Geneva, 1938.
Citace podle MLA (9th ed.)League of Nations. Committee of Statistical Experts. Statistics of the Gainfully-occupied Population; Definitions and Classifications Recommended by the Committee of Statistical Experts. 1938.
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