Illinois Reads
저자: Kevin Daugherty
1. Inventor's Secret
1.1. Edison
1.2. Ford
1.3. Keep At It
2. Their Inventions
2.1. Electric Light
2.2. Model T
2.3. Fordson Tractor
3. Farm Inventions
3.1. Carver
3.2. Deere/McCormick
3.3. Glidden
4. Books
4.1. Pre K
4.2. K-2
4.3. Older
