1. 1974-01-19 This booklet describes what a demonstration entails, how to getready for the demonstration, and how to conducting your demonstration. Extension Service, US Dept. of Agriculture 14 pages, illustrated, photos
  2. The book is both a starting point for those with little experience of visual aids, and a rich source of new ideas for those who already use a variety of visual aids.
  3. Participatory approaches to research and development that are appropriatie for poor farmers have become widespread in the past decade. This book describes experiences with one such approach, the Comite de Investigacion Agricola Local, or Local Agricultural Research Committee. The CIAL is a...