@book{47,
	author = {Goetsch, David L.},
	title = {Occupational safety and health for technologists, engineers and managers / },
	publisher = {Prentice Hall,},
	year = {c2011.},
	address = {Upper Saddle River, N. J. : },
	edition = {7th ed.},
	note = {Includes indexes.}
}