Supposing Hunter-Gatherer Variability - Constructing Frames of Reference: An Analytical Method for Archaeological Theory Building Using Hunter-Gatherer and Environmental Data Sets. Lewis R. Binford. 2001. University of California Press, Berkeley. 583 pp. $75.00 (cloth) ISBN 0-5202-2393-4. - Cultural Diversity among Twentieth-Century Foragers: An African Perspective. Susan Kent, editor. 1996. Cambridge University Press, Cambridge. 344 pp. $100.00 (cloth), ISBN 0-5214-8237-2. - Hunter-Gatherers: An Interdisciplinary Perspective. Catherine Panter-Brick, Robert H. Layton, AND Peter Rowler-Conwy, editors. 2001. Cambridge University Press, Cambridge. 341 pp. $90.00 (cloth), ISBN 0521772109, $30.00 (paper), ISBN 0-5217-7672-4.