Crazy Contraptions: Build Rube Goldberg Machines That Swoop, Spin, Stack, and Swivel: With Hands-On Engineering Activities, Hardcover - Laura Perdew
126,99 RON 135,99 RON
Reducere. An exciting book about the chain reaction world of Rube Goldberg for middle schoolers, including 25 engineering design projects that get middle sch...
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