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What Is a Pulley? (Welcome Books: Simple Machines)
Book Details
Author(s)Lloyd G. Douglas
PublisherChildren's Press(CT)
ISBN / ASIN0516240242
ISBN-139780516240244
AvailabilityUsually ships in 24 hours
Sales Rank402,652
CategoryJuvenile Nonfiction
MarketplaceUnited States 🇺🇸
Description
Full-color photographs and simple text introduce young readers to the fundamenetals of the mechanics that drive simple machinery.




















