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Lua i Stíl Chicago (17ú heag.)Gahin, M. Fikry S. Social Insurance and Socioeconomic Development in UAR. Cairo: The Institute of National Planning, 1970.
Lua MLA (9ú heag.)Gahin, M. Fikry S. Social Insurance and Socioeconomic Development in UAR. The Institute of National Planning, 1970.