Comit de la Dveloppement de la Rgion de Yako (CDRY), Association Burkinabe de Recherch Action et Auto Formation pour le Dveloppement (ABRAAD), Burkina Faso: agency running costs; supervision and material for a cereal bank programme; well digging, dam construction, anti-erosion work and purchase of vehicles for development work in Passore province; evaluation by ABRAAD, 1986-1992