TY  - GEN
AU  - Batra, Mamta
TI  - Disha's 30 years IIT-JEE topic wise solved papers mathematics: 1978-2007 
SN  - 9780000001111
U1  - 510 
PY  - 2008///
CY  - New  Delhi
PB  - Disha Publications
ER  -