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Ruth Kassinger

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Build a Better Mousetrap: Make Classic Inventions, Discover Your Problem Solving Genius, and Take the Inventor's Challenge Author: Ruth Kassinger Manufacturer: Wiley ListPrice: $14.95 Offer: $13.45	Reinvent the Wheel: Make Classic Inventions, Discover Your Problem-Solving Genius, and Take the Inventor's Challenge Author: Ruth Kassinger Manufacturer: Wiley ListPrice: $14.95 Offer: $11.96	Dyes Author: Ruth Kassinger Manufacturer: 21st Century ListPrice: $25.90 Offer: $25.90
Ceramics Author: Ruth Kassinger Manufacturer: 21st Century ListPrice: $25.90 Offer: $18.27	Iron and Steel Author: Ruth Kassinger Manufacturer: 21st Century ListPrice: $25.90 Offer: $25.90	Manual del inventor/ Build a Better Mousetrap Author: Ruth Kassinger Manufacturer: Paidos Iberica Ediciones S a ListPrice: $25.95 Offer: $19.72
U.S. Census: A Mirror for America Author: Ruth Kassinger Manufacturer: Raintree Steck-Vaughn Publishers ListPrice: $28.54 Offer: $21.69	Iron and Steel Author: Ruth G. Kassinger Manufacturer: Lerner Pub Group	Build a Better Mousetrap Author: Ruth Kassinger Manufacturer: John Wiley & Sons Inc
Gold: From Greek Myth to Computer Chips (Material World) Author: Ruth G. Kassinger ListPrice: $25.90	U.S. Census: A Mirror for America Author: Ruth Kassinger Manufacturer: Raintree Pub	Glass: From Cinderellas Slippers to Fiber Optics (Material World) Author: Ruth G. Kassinger ListPrice: $25.90
Reinvent the Wheel: Make Classic Inventions, Discover Your Problem-Solving Geniu Author: Ruth G. Kassinger Manufacturer: John Wiley & Sons ListPrice: $24.55 Offer: $24.55	Build a Better Mousetrap: Make Classic Inventions, Discover Your Problem Solving Author: Ruth G. Kassinger Manufacturer: Topeka Bindery ListPrice: $24.55