Textbook on Co-ordinate Geometry. Ed 6 - Gorakh Prasad; H. C. Gupta (Allahabad Pothishala Pvt Limited, 1965)
Gorakh Prasad & H. C. Gupta: Textbook on Co-ordinate Geometry. Ed 6. (6th Edition) Allahabad. Pothishala Pvt Limited, 1965.--(516PRA)
ENGLISH