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Each book in this series focuses on a type of simple mechanism and examines how it is used to make different toys work. This book examines screws, nuts, and bolts, and uses simple language and labeled photographs to explain the scientific principles behind their use.
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Book Description Raintree, 2013. Condition: Good. Ships from the UK. Former Library book. Shows some signs of wear, and may have some markings on the inside. Seller Inventory # GRP106196199
Book Description Paperback. Condition: Very Good. The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged. Seller Inventory # GORX009059221