@book{32509,
	author = {Greenwood, Ivan A., and Holdam, J. Vance,},
	title = {Electronic instruments,},
	publisher = {McGraw-Hill,},
	year = {c1948.},
	series = {Radiation laboratory series,},
	address = {New York :},
	edition = {1st ed.},
	note = {Includes index.}
}