TY  - BOOK
T1  - 536 puzzles & curious problems.
DA  - [1967]
CY  - New York,
AU  - Dudeney, Henry Ernest,
AU  - Gardner, Martin,
CN  - QA95
CN  - QA95
PB  - Scribner
PP  - New York,
PY  - [1967]
ID  - 257307
KW  - Mathematical recreations.
KW  - Puzzles.
TI  - 536 puzzles & curious problems.
ER  -