Why Do Bridges Arch? Level 3 Factbook

Nauka języków


drukarnia fleksograficzna

A series of twenty non-fiction science readers which engages children in the world around them. What holds up skyscrapers? Why are sports domes curved? drukarnia fleksograficzna Why are triangles used in many bridges? You can find the answers to these and other questions about structures in Why Do Bridges Arch?

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