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Inclined planes /
by Dahl, Michael S.
Publication:
Mankato,MN : Bridgestone Books, 1996
. p. cm.
Date:1996
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Wheels and axles /
by Dahl, Michael.
Publication:
Mankato, MN : Bridgestone Books, 1996
. 24 p. :
22 cm.
Date:1996
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Gear up! : marvelous machine projects /
by Good, Keith.
Publication:
Minneapolis, Minn. : Lerner Publications, 1999
. p. cm.
, Includes index
Date:1999
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(1),
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