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Résultats du recensement général de la population de la Polynésie Française
(1991)
Zur Geschichte der eidgenössischen Volkszählung
Busset, Thomas, (1993)
Northern Ireland 1989 census test
Morris, Chris, (1990)
2002 Economic Census
Federal, State, and Local Governments
The social and economic status of the Black population in the United States, 1971
McKenney, Nampeo D. R., (1972)