Reports by Richard Terry

	Ancient Maize Agriculture and Soil Resources in the Rio Usumacinta Valley near La Technica, Guatemala.
	Ancient Maya Marketplace Activities: A Geochemical Study of Plaza Types at Seibal, Guatemala.
	Ancient Maya Wetland Agriculture at Tikal, Guatemala.
	Long-Term Persistence of Acetylene Biodegradation in Soils with a History of Exposure to the Gas.
	Soil Resources of the Ancient Maya at Chunchucmil, Yucatan, Mexico.
	The Ancient Agricultural Landscape and Soil Resources at the Maya Site of Ramonal, Guatemala.