TY  - GEN
AU  - Kolby, Jeff
TI  - GMAT Data Sufficiency Prep Course: (A thorough review)
SN  - 978-81-7234-351-4
U1  - 153.9 
PY  - 2011///
CY  - New Delhi
PB  - Prakash Books India Pvt. Ltd.
ER  -