Range:
Subjects: Egypt; Economic aspects; Plants
Subjects: Fertilizers; Irrigation; Salinity; Soils
Subjects: Egypt
Subjects: Environmental aspects; Genetics
Subjects: Genetics
Subjects: Salts; Barley; Evaluation; Fertilizers
Subjects: Egypt; Sinai peninsula; Irrigation; Salinity; Soils
Subjects: Botany; Fertilizers; Plants; Physiology; Reproduction
Subjects: Chickens; Physiology
Subjects: Sanitation; Waste water
الموضوعات: شبه جزيرة سيناء؛ الجوانب الاجتماعية؛ الموارد المائية