Volume & Issue: Volume 41, OCTOBER- DECEMBER - Serial Number 4, December 2020 
Survey of Plant Parasitic Nematode Associated with Spinach, Swiss Chard and Table Beet in North Egypt

Pages 471-477

Ayman B. A. Basyony; Ibrahim K. A. Ibrahim; Sabreen M. A. Zeyadah; Maha A. I. Kawanna

Effect of Training Environment Resources Management on Students' Performance Level in some Educational Hotel Institutes in Alexandria

Pages 337-356

Naglaa Abd-El-salam Mahmoud; Youssria Ahmed Abd-Elmoneim; Ashour Kamel Ashour; Randa Mohamed Hazem

The Impact of Political Changes on Agricultural Investments

Pages 357-365

Nashwa EL- Tatawy; EL-Hussein EL-Seify; Nabil Refaay

The Economic Effects of Climate Change on the Olive Harvest in Matrouh Governorate

Pages 581-595

Ragab I. Murad; Amr Abd El-Hameid Refaat; Mohamed Rashad; Ahmed Ayoub Abdelaziz

Analytical Study of Potato Value Chain in Menoufia Governorate

Pages 635-661

Amal Kamel Eid Ramadan; Rania Abdallah El Saied Tolba