TY  - BOOK
AU  - Heron 
AU  - Stuart, Andrew
TI  - Extreme sudoku for dummies 
SN  - 0470116277 
U1  - 793.74 HER 2007 
PY  - 2007///
CY  - Hoboken
PB  - Wiley
KW  - Logic puzzles
KW  - Sudoku
N1  - Includes question and answer
ER  -