@book {,
	title = {Textiles of ancient Peru and their techniques},
	year = {1962},
	note = {Burger 1977 notes obsidian on pgs 110 and 112},
	publisher = {University of Washington Press},
	organization = {University of Washington Press},
	address = {Seattle},
	author = {D{\textquoteright}Harcourt, Raoul},
	editor = {Grace G. Denny and Carolyn M. Osborne}
}