TY  - BOOK
AU  - Miyamoto, Tetsuya.
TI  - KenKen: the new brain-training puzzle phenomenon : book 2 
PY  - 2008///
CY  - Tokyo, Japan
PB  - Gakken Co., Ltd
KW  - Mental efficiency
KW  - problems, exercises, etc
KW  - sears
KW  - Puzzle
ER  -