TY  - BOOK
AU  - Friedland,Aaron J.
TI  - Puzzles in math and logic: 100 new recreations 
SN  - 048622256X
AV  - QA 95 F73.1970
PY  - 1970///,
CY  - New York
PB  - Dover Publications, Inc.
KW  - Mathematical recreations
KW  - Recreaciones matemáticas
UR  - http://www.loc.gov/catdir/description/dover033/72130639.html
UR  - http://www.loc.gov/catdir/enhancements/fy1318/72130639-t.html
ER  -