TY  - BOOK
AU  - Hoffmann, Louis
TI  - Professor Hoffmann's best math and logic puzzles
SN  - 9780486454740
SN  - 200610293
U1  - 793.74 HOF 
PY  - 2007///
CY  - Mineola, NY
PB  - Dover Publications
KW  - Logic puzzles
KW  - Mathematical recreations
N1  - Originally published: Puzzles, old, and new. London : F. Warne, c1893
ER  -