TY  - BOOK
AU  - Sivasailam Thiagarajan
AU  - Raja Thiagarajan
TI  - Instructional puzzlesl : : Intriguing challenges to the leaner / 
SN  - 0874253241   
PY  - 1995///.
CY  - Amherst, MA
PB  - HRD Press, 
KW  - Instructional puzzles
KW  - Puzzles
ER  -