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Scientific Publication Fertilizer recommendations based on soil-nitrogen levels - a total nutrient model author(s) Smith, J - Umali, G from International Rice Research Institute (IRRI) permalink open published in 1984 themes Social Inclusion citation Smith, J; Umali, G, 'Fertilizer recommendations based on soil-nitrogen levels - a total nutrient model', Journal of Agricultural Economics, vol. 35(2), pp. 231-241, Wiley, 1984 Publications and datasets provided via GARDIAN Open original
