HarperCollins How Does It Work
15.90 CHF
+ 3.50 CHF
How does a yo-yo climb back up its string? Why does a boomerang come back to you? And how does a kaleidoscope work? These and other mind-bending questions are answered in this explanation text about how toys work. ...
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| Orellfuessli.ch | 15.90 CHF | 3.50 CHF | 19.40 CHF |