TY - BOOK AU - Lipton, M. , Longhurst, R AU - Longhurst, R TI - Modern varieties international agricultural reseach and the poor SN - 02573148 AV - SB176.D44.L57 1985 PY - 1985/// CY - Washington PB - The world bank KW - Food crops--varieties-economic aspects developing countries KW - Poor developing countries KW - Agricultural innovation--developing countries ER -