TY  - BOOK
AU  - Malhotra, O. P., 
AU  - Gupta, S. K.
AU  - Gangal Anubhuti.
TI  - BHSEC mathematics book II: for class XII students of Bhutan 
SN  - 9788121935791
PY  - 2011///
CY  - Delhi
PB  - S. Chand & Company Ltd
ER  -