也許更便宜
- World of Discovery Level A Set
- NTD$1035
- 商品搜尋日04-19
- World of Discovery Level C Set 3
- NTD$1446
- 商品搜尋日03-25
- World of Discovery Level C Set 4: Discovering Mathematics
- NTD$1504
- 商品搜尋日04-18
- World of Discovery Level C Set 2/World Scientific Pub Co Inc【三民網路書店】
- NTD$1561
- 商品搜尋日03-01