Volume & Issue: Volume 42, JANUARY- MARCH - Serial Number 1, January 2021 
Economic study for the current and its matching optimal cropping pattern in Matrouh Governorate

Pages 119-136

El-Sayed Mahmoud El- Sharkawy; Ahmed Mahgoub Ahmed Shaalan; Yasmen Salah Abd El- Razek Kishar; Nariman Abd El-Hamid Abd El-Megid


Economic Study of Fish Production from Manzala and Burullus Lakes

Pages 357-369

Amr Abd El-Hameid Refaat; Said Mohamed Abd El- Hafez; Mai Mustafa Hassan Morsi; Muhammad Gaber Muhammad Alkhuly


Role of Knowledge Systems to Achieve Sustainable Agricultural Development in the Republic of Yemen

Pages 495-517

Abu Zaid Mohamed M. EL-Habbal; Gaber Ahmed B. Shihata; Abdulwahab Noman Ghaleb Hazbar