《Abstract Crossword 4x7b2》是一本圖書
基本介紹
- 外文名：Abstract Crossword 4x7b2
- ISBN：9781546527510
內容簡介
A mathematics-based, crossword puzzle SYSTEM. Volume 2 of 3. The unsolved Abstract Crossword puzzles. Introduces the novelty of 2D Regular Expressions! Across and down, simultaneously. Seniors, when you sign up for Medicare coverage of your physical health, at the same time purchase this series of mental exercises to sharpen and re-sharpen your brain on a regular basis.
