@book{4693,
	author = {Sinha, K. D. P. and Prasad, S. B.},
	title = {Prarambhik Niyamik Jayamiti = Elementary Co-ordinate Geometry /},
	publisher = {: Students' Friends},
	year = {, 1977},
	address = {.- Patna},
	edition = {7th ed.}
}