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The ancient Sahara has often been treated as a periphery or barrier, but this agenda-setting book - the final volume of the Trans-Saharan Archaeology Series - demonstrates that it was teeming with technological innovations, knowledge transfer, and trade from long before the Islamic period. In each chapter, expert authors present important syntheses, and new evidence for technologies from oasis farming and irrigation, animal husbandry and textile weaving, to pottery, glass and metal making by groups inhabiting the Sahara and contiguous zones. Scientific analysis is brought together with...

A compilation of the proceedings of a conference held to honor Alvin M. Liberman for his outstanding contributions to research in speech perception, this volume deals with two closely related and controversial proposals for which Liberman and his colleagues at Haskins Laboratories have argued forcefully over the past 35 years. The first is that articulatory gestures are the units not only of speech production but also of speech perception; the second is that speech production and perception are not cognitive processes, but rather functions of a special mechanism. This book explores the...