Books by Ruth Kassinger
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-20%
Build a Better Mousetrap: Make Classic Inventions, Discover Your Problem Solving Genius, and Take the Inventor's Challenge
€22.70
€28.38
-20% with code BOOKS
In stock at our supplier
-20%
Bloom: From Food to Fuel, The Epic Story of How Algae Can Save Our World
€28.16
€35.20
-20% with code BOOKS
In stock at our supplier
-20%
Slime: How Algae Created Us, Plague Us, and Just Might Save Us
€29.20
€36.50
-20% with code BOOKS
In stock at our supplier
-20%
Build a Better Mousetrap: Make Classic Inventions, Discover Your Problem Solving Genius, and Take the Inventors Challenge
€22.10
€27.63
-20% with code BOOKS
In stock at our supplier