TY  - BOOK
AU  - Thakur,Rajesh kumar
TI  - Speed mathematics: do it quick, do it right! 
SN  - 9789353040895
U1  - 510 THA 
PY  - 2018///
CY  - New Delhi
PB  - Rupa
KW  - Mental arithmetic
N1  - Rs.295/-

S02/26
UR  - http://www.loc.gov/catdir/bios/wiley046/2004297402.html
ER  -