is defined as a group of populations sharing There are three types of entries in the similar subsistence practices, technology, Encyclopedia: the major tradition entry, and forms of sociopolitical organization, the regional sub tradition entry, and the which are spatially contiguous over a rela site entry.
These volumes comprise an overview of all of human history, from two million years ago to the historic period. Prepared under the auspices and with the support of the Human Relations Area Files and an internationally distinguished advisory board, the encyclopaedia is organized regionally with entries on each major archaeological tradition written by noted experts in the field. The entries follow a standard format and employ comparable units of description and analysis.