Book excerpt: Contains tool descriptions providing a basis for the analysis of existing product lines as examples for the design of new systems, including illustrations of and background material on control systems for the extrusion process. A half-century of diary entries made by a persevering West Texas farmer record his life and reflect the concerns and events of Great Plains farmers as various elements of government, the economy, and natural conditions came into play. Editor Neugebauer supplies pertinent background interspersed throughout. Annotation copyrighted by Book News, Inc., Portland, OR