Indigenous knowledge systems for agriculture and rural development
de Richards, Paul, Paul Richards, L. Jan Slikkerveer, Adedotun O. Phillips · Publicada por primera vez en 1989
de Richards, Paul, Paul Richards, L. Jan Slikkerveer, Adedotun O. Phillips · Publicada por primera vez en 1989
Technology and Social Change Program · inglés · ISBN 9780945271185
Technology and Social Change Program , Iowa State University in collaboration with the Academy for Educational Development, Washington, D.C. USA · inglés