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Lua i Stíl Chicago (17ú heag.)Institute of National Planning. An Economic Study of the Egyptian Cement Industry. Cairo: Institute of National Planning, 1974.
Lua MLA (9ú heag.)Institute of National Planning. An Economic Study of the Egyptian Cement Industry. Institute of National Planning, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.