TY  - BOOK
AU  - Philips, Sam
TI  - Skill builders 1000 math problems: success in 20 minutes a day : practice makes perfect 
SN  - 9788172452544
U1  - 510.76 PHI 
PY  - 2017///
CY  - New Delhi
PB  - Goodwill Publishing House
KW  - Arithmetic
KW  - Questions and answers
KW  - Competitive examinations
ER  -