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2016
Population Projections: Recipes for Action, or Inaction? , Population and Sustainability 1(1), 45-57
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2014
Ageing paranoia, its fictional basis and all too real costs., In “Sustainable Futures: Linking Population, Resources and the Environment.” (Eds J Goldie and K Betts). CSIRO Publishing, Melbourne. ISBN: 9781486301898 pp 47-60
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2013
The cost of population growth in the UK. , Report for Population Matters. http://populationmatters.org/documents/cost_population_growth.pdf
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2013
Nutritional Deficiencies and Toxicities, In: Clark, C.A. (ed) “Compendium of Sweetpotato Diseases, Second Edition,” American Phytopathological Society.
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2012
The burden of durable asset acquisition in growing populations., Economic Affairs 32(1), 31-37.
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2010
Yam Nutrition: Nutrient Disorders and Soil Fertility Management., ACIAR Monograph No. 144, Australian Centre for International Agricultural Research, Canberra, 112 pp.
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2010
What’s Carrying Capacity Got to Do with It?, Issues Magazine, Volume 91 “Population”, June 2010. Lead article pp 4-7. Control Publications, Australia.
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2008
Root distribution of yam (Dioscorea alata) determined by strontium tracer., Experimental Agriculture 44(2), 223-233.
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2008
Crop development and root distribution in lesser yam (Dioscorea esculenta): implications for fertilization., Experimental Agriculture 44(2), 209-221.
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2007
Nutrient deficiencies in lesser yam (Dioscorea esculenta) characterized using constant-water-table sand culture., J. Plant Nutr. Soil Sci. 170(2), 273-282.
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2006
Nutrient deficiencies in Greater Yam and their effects on leaf nutrient concentrations., J. Plant Nutrition 29(9), 1663-1674.
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1997
Nutrient Disorders of Sweet Potato, ACIAR Monograph 48, 136p.