Ruth Kassinger

Slime: How Algae Created Us, Plague Us, and Just Might Save Us

Ruth Kassinger

$6.19 - $28.66

A Garden of Marvels: How We Discovered that Flowers Have Sex, Leaves Eat Air, and Other Secrets of Plants

Ruth Kassinger

$5.19 - $18.19

Paradise Under Glass: The Education of an Indoor Gardener

Ruth Kassinger

$5.09 - $19.64

Ceramics

Ruth Kassinger

$7.99 - $9.39

Build a Better Mousetrap: Make Classic Inventions, Discover Your Problem Solving Genius, and Take the Inventor's Challenge

Ruth Kassinger

$7.79 - $15.75

Glass: From Cinderella's Slippers to Fiber Optics

Ruth Kassinger

$11.29

Iron and Steel

Ruth Kassinger

$6.69 - $7.49

Go for the Gold

Ruth Kassinger

Out of Stock

Manual del inventor/ Build a Better Mousetrap

Ruth Kassinger

Out of Stock

U.S. Census: A Mirror for America

Ruth Kassinger

Out of Stock

Reinvent the Wheel: Make Classic Inventions, Discover Your Problem-Solving Genius, and Take the Inventor's Challenge

Ruth Kassinger

$5.59

Dyes

Ruth Kassinger

$8.79 - $10.49

The Outwin Boochever Portrait Competition 2006

Ruth Kassinger

$22.79