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Book, 1984
Current format, Book, 1984, , All copies in use.
Book, 1984
Current format, Book, 1984, , All copies in use. Offered in 0 more formats
Explains how plants produce oxygen, how air expands and contracts, the concept of air pressure, and the basic principles of flight, and includes simple experiments and models to make Suggested activities illustrate the properties of air and how air can be used to make things fly.
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