@book{549195,
	author = {Graham, Frank Duncan, and American Institute of Electrical Engineers.},
	title = {Audels answers on blue print reading for mechanics and builders,},
	publisher = {T. Audel & co.},
	year = {[c1941]},
	address = {New York,},
	note = {Chapter 10, "A.I.E.E. standards: standard symbols for electrical equipment of buildings" (p. 167-170) has special t.-p.}
}