TY  - GEN
AU  - Tyagi, Praveen
TI  - Secrets behind faster calculations: train your brain to become a human calculator
SN  - 9789387766860
PY  - 2018///
CY  - New Delhi
PB  - G. K. Publications
KW  - Calculations
KW  - Faster calculation
KW  - Human calculator
ER  -