TY  - BOOK
AU  - Devi S
AU  - Devi S
TI  - The joy of numbers
SN  - 81-222-038-9
U1  - 153.94 
PY  - 2001///
CY  - New Delhi
PB  - Orient Longman Pub
KW  - Aptitude tests
N1  - Puzzels;Aptitude Tests
ER  -