@inbook {,
	title = {Preliminary Discussion of Prehistoric Settlement and Terracing at Achoma in the Colca Valley, Peru},
	booktitle = {Pre-Hispanic agricultural fields in the Andean Region},
	volume = {359(i)},
	year = {1987},
	note = {proceedings, 45 Congreso Internacional de Americanistas, Bogot{\'a}, Colombia, 1985},
	pages = {67-88},
	publisher = {B.A.R. International Series},
	organization = {B.A.R. International Series},
	address = {Oxford, England},
	author = {Shea, Daniel},
	editor = {Denevan, William M. and Mathewson, Kent and Knapp, Gregory W.}
}