@book{71484,
	author = {Magison, Ernest C.},
	title = {Electrical instruments in hazardous locations /},
	publisher = {International Society of Automation (ISA),},
	year = {1998},
	address = {Research Triangle Park, NC :},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/toc/ecip078/2007000622.html}
}