ocr: bureaucrats and military leaders presumably occupied the top strata of the city's society, but their number could not have been large. Many of the inhabitants tilled lands outside the city, and many others must have been artisans: potters, workers in obsidian and stone, and craftsmen dealing with more perishable materials such as cloth, leather, feathers and wood (traces of which are occasionally preserved). Well-defined concentrations of surface remains suggest that craft groups such as potters and workers in - stone and obsidian tended to live together in their own neighborhoods. This lends ...