D. W. Norman

• Farming systems development and soil conservation
• Farming systems in the Nigerian savanna
• A Socio-economic survey of three villages in the Sokoto close-settled zone
• An economic analysis of beef cattle prices
• An economic study of three villages in Zaria Province
• Determination of relevant research priorities for farm development in West Africa
• Economic analysis of agricultural production and labour utilisation among the Hausa in the North of Nigeria
• Economic analysis of beef cattle prices in the United States and Oregon
• Farm and village production systems in the semi-arid tropics of West Africa
• Farming systems research approach
• Inter-disciplinary research on rural development
• La méthode de recherches sur les systèmes d'exploitation agricole