الفترة:
الموضوعات: العراق؛ الجفاف
الموضوعات: التآكل؛ المعادن
Subjects: Mathematical models
Subjects: Machines
Subjects: Computers; Data protection; Digital electronics; Encryption; Writing
Subjects: Antennas
Subjects: Computing
Subjects: Temperatures; Concrete
Subjects: Building materials; Concrete; Reinforced concrete
Subjects: Reinforced concrete