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دليل المستخدم
El Deeb، B. N. (1985). Population and Investment: Application of a Model Examining the Interrelation Between Population Growth and Investment in Egypt. السكان : بحوث ودراسات، ع30 ، 93 - 123. مسترجع من http://search.mandumah.com/Record/669472
El Deeb، Botina N. "Population and Investment: Application of a Model Examining the Interrelation Between Population Growth and Investment in Egypt." السكان : بحوث ودراسات ع30 (1985): 93 - 123. مسترجع من http://search.mandumah.com/Record/669472