George L. Cowgill

• The Collapse of ancient states and civilizations
• Ancient Teotihuacan
• Collapse of Ancient States and Civilizations
• The Collapse of Ancient States and Civilizations
• Archaeological Researches at Teotihuacan, Mexico
• Postclassic period culture in the vicinity of Flores, Peten, Guatemala
• Problems and some solutions in seriating large data sets