Author = Hoda I. Helal
ECONOMICS AND COSTS OF USING ORGANIC AND CHEMICAL FERTILIZERS AND THEIR EFFECTS ON PUBLIC HEALTH

Volume 52, Issue 7, July 2023, Pages 51-66

Doaa N. Abu Bakr; Seham Ahmed; Hoda Helal; Yehia Abu Taleb


THE ROLE OF COSTS REDUCTION WITH KEEPING QUALITY IN INCREASING COMPETITIVENESS ABILITY OF AUTO INDUSTRY IN EGYPT

Volume 51, Issue 12, December 2022, Pages 99-126

Mohamed Aboulfadl Ali; Yehia M. Mohamed Abu Talab; Maged El-Kharboultly; Hoda Ibrahem Ahmed Helal


CIVIL LIABILITY FOR DAMAGES RESULTING FROM POLLUTION OF THE NILE RIVER WATER AND THE MEDITERRANEAN SEA AN APPLIED STUDY

Volume 51, Issue 8, August 2022, Pages 173-209

Tamer M. Ghaly; Khaled H. Abdel Rahman; Noha S. Donia; Hoda I. Helal


The use of the circular economy in waste management

Volume 51, Issue 7, July 2022, Pages 402-417

sherif mohamed farid; Noha Samir Donia; Hoda I. Helal; Tarek E. El Roby