تعلیمے مفت ات یېت سرچښمه یېن افغانستان ارد

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Air and Air Pollution

     
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This lesson introduces students to the concept of air pollution.


About this resource
Available in the following languages
Resource level
Secondary
چاپگهر

University of Illinois

لسئنس

CC BY-NC / CC BY-NC-SA

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