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علاء الدين محمد محمد سعفان
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Issue Date
Title
Author(s)
2003
اقتصاديات الزراعه المحميه في محافظه شمال سيناء
علاء الدين محمد محمد سعفان
1995
اقتصاديات انتاج وتسويق بعض المحاصيل الزراعية بمحافظة شمال سيناء
علاء الدين محمد محمد سعفان
