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Lua i Stíl Chicago (17ú heag.)Gittinger, J. Price. World Bank Project-financed Research on Population, Health and Nutrition. Washington, D.C: Population and Human Resources Department, World Bank, 1992.
Lua MLA (9ú heag.)Gittinger, J. Price. World Bank Project-financed Research on Population, Health and Nutrition. Population and Human Resources Department, World Bank, 1992.
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