@book{30466,
	author = {De Kieffer, Robert E. and Cochran, Lee W.},
	title = {Manual of audio-visual techniques},
	publisher = {Prentice-Hall},
	year = {1962.},
	series = {Prentice-Hall education series},
	address = {Englewood Cliffs, N.J.},
	edition = {2d ed.}
}