@book{16033,
	author = {Krishnamurthy, K., Pranesachar, C. R. , Ranganathan, K. N. and Venkatachala,  B. J.},
	title = {Challenge and thrill of pre college mathematics /},
	publisher = {New Age International Ltd., },
	year = {2011},
	address = {New Delhi :},
	edition = {1st ed.}
}