Al Saadi، S. Z. (1973). A COMPREHENSIVE THREE-LEVEL DEVELOPMENT PLANNING MODEL: A Practical Decentralization Planning Approach for the Underdeveloped Countries. مجلة مصر المعاصرة، مج64, ع353 ، 251 - 281. مسترجع من http://search.mandumah.com/Record/663594
Al Saadi، Saari Z. "A COMPREHENSIVE THREE-LEVEL DEVELOPMENT PLANNING MODEL: A Practical Decentralization Planning Approach for the Underdeveloped Countries." مجلة مصر المعاصرة مج64, ع353 (1973): 251 - 281. مسترجع من http://search.mandumah.com/Record/663594