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Scales and Balances
Lisa J. Amstutz
出版Raintree, 2020-08-06
ISBN14747694709781474769471
URLhttp://books.google.com.hk/books?id=0OnaDwAAQBAJ&hl=&source=gbs_api
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註釋How heavy is it? Young readers will learn how scientists use scales and balances to observe and measure weight.