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Methodology and definitions
United Nations / Statistical Office - New York, NY : UN - Iss. 1.1967(1968) - 3.1977(1979); damit Ersch. eingest.
Persistent link: https://www.econbiz.de/10004267571
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Definitions and explanatory notes
United Nations / Statistical Office - New York, NY : United Nations - Iss. 1.1948 - 5.1963(1964)
Persistent link: https://www.econbiz.de/10004288626