Book
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Small inventions that make a big difference
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Title
Small inventions that make a big difference
Call No
608 SMA
Subjects
Language
English
Published
Washington, D.C. : National Geographic Society, c1984.
Publication Desc
104 p. : ill. (some col.) ;
ISBN
0870444980 :
LCCN
83023770
Series
Dimensions
28 cm.