1. Confusion in fertilizers and the world food situation;Allen;European Chemical News, Chemscope Supplement,1974
2. Agricultural policies in the shadow of Malthus;Allen;Lloyds Bank Review,1975
3. Some aspects of planning world food supplies;Allen;Journal of Agricultural Economics,1976
4. Report to the Commission on Fertilizers, 8–11 June 1976;Commission on Fertilizers,1976
5. Evaluating Fertilizer Subsidies in Developing Countries;Dalrymple,1975