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Search - Bridges and Tunnels (Technology Topics)
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Bridges and Tunnels - Technology Topics Author: This is one of a series of books that look at different topics on a design and technology basis. This book, dealing with bridges and tunnels, asks: what is its purpose?; how is it put together?; what is it made of?; and how does it work? Related craft activities help the reader to discover the answers and they are also encouraged to contribute f... more »
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