Download or read book Desert Frontier written by James L. A. Webb and published by Univ of Wisconsin Press. This book was released on 1995 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Documents the increasing aridity of the transitional zone between the full desert of the Sahara and the open grassland of western Africa, the border moving 200-300 kilometers south during a brief two and half centuries; and the political and economic changes as pastoral nomads of the desert edge followed the shift south, and the agricultural communities in their way had to abandon their villages or face subjugation. Annotation copyright by Book News, Inc., Portland, OR