TY  - BOOK
AU  - Sharma, Usha
AU  - Lal, Chopra
TI  - NIRDESHANK JYAMITI
U1  - 516.16 
PY  - 1973///
CY  - Chandigarh
PB  - Hariyana Hindi Granth Academy
KW  - Geometry, Analytic
KW  - Coordinates
ER  -