@book{544666,
	author = {Spencer, Henry Cecil, and Giesecke, Frederick E.},
	title = {Technical drawing problems, series 2},
	publisher = {Macmillan Pub. Co.},
	year = {c1991.},
	address = {New York,},
	edition = {9th ed.},
	note = {"Intended primarily for use with Technical drawing (sixth edition, 1974) by Giesecke, Mitchell, Spencer, and Hill."}
}