books الهواء من حولنا
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# The open air
# air pollution
# air conditioner
# cold air
# Heating, ventilation and air conditioning
# air humidity
# air velocity
# lighter than air
# air dryer
# roots in the air
# yellow air
# air filter
# sources of air pollution
# Climb into the air
# swallowing air
# Air conditioning engineering
# The boy who saw the color of air
# On-air experiments
# Air Wonders Tamara Andrews
# Air conditioner nightmare
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الهواء من حولنا (Book)
هذا الكتاب في تعريف الهواء وما هو ومما يتكون ومدى ارتفاعه وانتشاره لضوء الشمس فوق سطح الأرض والرياح والزوابع والضباب والصقيع والمطر
