@book{7921,
	author = {Gupta, B. R.},
	title = {Electronics and instrumentation /},
	publisher = {S Chand & Co Ltd,},
	year = {2005.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/8121923158/chopaconline-20}
}