
Tunnels allow people to cut through tall mountains or even travel deep underwater. Discover the engineering behind tunnels.
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Bahasa Inggeris ● Format PDF ● Halaman-halaman 32 ● ISBN 9781502606020 ● Penerbit Cavendish Square Publishing, LLC ● Diterbitkan 2015 ● Muat turun 3 kali ● Mata wang EUR ● ID 8672528 ● Salin perlindungan Adobe DRM
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