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This is a publication of the Information Centre for Low-External-lnput and Sustainable Agriculture (lLElA). Much of the material presented in the 1988 bibliography, however, is no longer available, or has been replaced bypublications that present a new view on the situation. Although the emphasis in ILEIA's work has not really shifted, new points of attention have come up since then. Many documents have been collected on Paft icipatory Technology Development andvarious appraisal methods in Farming Systems Research.