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Portions of this article have been modified with permission of the author from Berger, L.R. (2005) Working and Guiding in the Cradle of Humankind. Prime Origins Publishing. ISBN 0-620-31866-x
For further reading, a useful overview is provided by Barker, Philip (1993). Techniques of Archaeological Excavation, third edition. London: Routledge. ISBN 0-415-15152-X.