الفترة:
الموضوعات: التآكل؛ التربة؛ جبال السروات؛ الرعي
الموضوعات: السعودية؛ النظام الشمسي؛ علم الفلك؛ علم المواقيت؛ الصلوات
Subjects: Saudi Arabia; Physiology; Temperatures
Subjects: Heavy minerals; Physiology
Subjects: Riyadh; Saudi Arabia; Honey
Subjects: Phosphorylation
Subjects: Saudi Arabia; Diagnosis
Subjects: Astrophysics; Dynamics
Subjects: Data processing; Quality assurance
Subjects: Iraq
Subjects: Diabetes; Physiology
Subjects: Agricultural chemicals; Chemical elements; Saudi Arabia; Food
Subjects: Aldehydes; Aldol condensation
Subjects: Fruits; Vegetables
Subjects: Saudi Arabia; classification Libraries
Subjects: Red Sea; Salinity