Bridges and tunnels investigate feats of engineering
Bridges and tunnels are lifelines. People have tackled seemingly insurmountable obstacles, including vast canyons and mountain ranges, to design and construct these amazing passageways. Bridges and Tunnels: Investigate Feats of Engineering invites children ages 9 and up to explore the innovation and...
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| Format: | Downloads eBook Books eBook |
| Language: | English |
| Published: |
2012.
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| Series: | Build It Yourself.
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| Subjects: | |
| Online Access: | Go to Downloadable eBook Here. |
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