TY  - BOOK
AU  - Hufford,Roger
TI  - Challenging puzzles in logic
SN  - 0486242242 (pbk.) :
AV  - GV1493 .H83 1982
U1  - 793.73 19
PY  - 1982///
CY  - New York
PB  - Dover Publications
KW  - Puzzles
KW  - Logic
KW  - Logical puzzles - Collections
UR  - http://www.loc.gov/catdir/description/dover032/81068486.html
UR  - http://www.archive.org/details/challengingpuzzl00huff
UR  - http://www.openlibrary.org/books/OL3790131M
ER  -