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The Agricultural Revolution of the 20th Century by Don Paarlberg and Philip Paarlberg, Iowa State University Press, 2000, 154 pages, paperback $29.99 "Not evolution, but revolution" is the assertion of this historical account of agriculture in the twentieth century. The advances in nearly every discipline of agriculture over the past century can be likened to a good "science-fiction" film. The authors bring to light the revolutionary changes that have taken place in agriculture in a short 154 pages and 12 chapters. The 19th Century is discussed, followed by Mechanized Agriculture, Chemical Advances, Biological Changes, Information Explosion, and the Management and Economics of agriculture. The text also considers the personal dimension of the Agricultural Revolution as it relates to...