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Different types of pulleys are described in this introductory book, including those used on flagpoles and cranes. Series Information Full-color photographs and simple text introduce young readers to the fundamentals of what makes things go in this first introduction to the mechanics that drive simple machines.
Different types of pulleys are described in this introductory book, including those used on flagpoles and cranes. Series Information Full-color photographs and simple text introduce young readers to the fundamentals of what makes things go in this first introduction to the mechanics that drive simple machines.
