@book{8375,
	author = {Brittain, James L. and Head, George O.,},
	title = {The AutoCAD productivity book :},
	publisher = {Ventana Press,},
	year = {c1991.},
	address = {Chapel Hill, NC :},
	edition = {4th ed.},
	note = {Rev. ed. of: The AutoCAD productivity book / A. Ted Schaefer, James L. Brittain. 3rd ed. c1989.}
}