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Nuts & bolts
Barry A. Van Deman · Science Man Press
62 sayfa · 1980
Exhibitions / Experiments / Juvenile literature / Science / Science fairs
Harcourt science
Marjorie Frank, Robert M. Jones, Gerald H. Krockover, Mozell P. Lang, Joyce C. McLeod, Carol J. Valenta, Barry A. Van Deman, JONES, KROCKOVER, FRANK · Harcourt School Publishers
47 sayfa · 1999
Physical sciences / Life sciences / Earth sciences / Science / Study and teaching (Elementary)
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