Agricultural alternatives and nutritional self-sufficiency : for a sustainable agricultural system that respects man and his environment. Procedings of the IFOAM Seventh International Scientific Conference, Ouagadougou, January 2-5, 1989 - Djigma, A.; Nikiema, E.; Lairon, D.; Ott, Peter; IFOAM International Scientific Conference 1989 : Ouagadougou) (Theley : IFOAM, 1990)
Keywords: AGRICULTURA ALTERNATIVA -- CONGRESOS; AGRICULTURA ORGANICA -- CONGRESOS; AGRICULTURA SOSTENIBLE -- CONGRESOS; PRODUCCION AGRARIA -- ASPECTOS AMBIENTALES -- CONGRESOS; SISTEMAS AGRICOLAS -- CONGRESOS