Slow Down, Sara!

ISBN: 9781575651255

×÷Õß: Page Eastburn O'Rourke

³ö°æÉç: Lerner Pub Group

Ò³Êý: 32

¶¨¼Û: $ 6.72

×°Ö¡: Pap

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Ben is worried when his friend "Speedy" Sara slows down just before the soapbox race, but she is using science to improve her chances.