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Wade, Harlan
Compare Name:
wadeharlan
The wheel
Wade, Harlan
1979
Describes in simple terms the wheel and how it works.
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about The wheel
The lever
Wade, Harlan
1979
A simple explanation of how a lever works.
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about The lever
Wood
Wade, Harlan
1977
Explains in simple terms what wood is, where it comes from, and its many uses.
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about Wood
Oil
Wade, Harlan
1977
A simple explanation of the sources of animal, vegetable, and mineral oils and the uses we make of them.
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about Oil
Water
Wade, Harlan
1977
Explains the basic properties and uses of water.
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about Water