TY  - BOOK
AU  - Gupta, R. S.
AU  - R. S. Gupta
TI  - Conic sections
U1  - 516 GUP 
PY  - 1968///
CY  - Allahabad 
PB  - : Pothishala Pvt Ltd 
KW  -  Mathematics
KW  - Hyperbola
KW  - Polar equation
ER  -