LITERATURE CITED
- D. H. Meadows, D. L. Meadows, Ji Randers and W. W. Behrens, The Limits to Growth, Universe Books, New York (1972).
- A. Biswas, Report Prepared for the Working Party on Soil Resources of the World, IFIAS, Solna, Sweden (1977).
- Lawes started work at Rothamsted in 1841 and was joined by Gilbert in 1842. No early reports were issued, but the farmers of England were so impressed by the results obtained with superphosphate that they subscribed funds to allow the building of the Testimonial Laboratory at Rothamsted, opened in 1855.
- D. J. D. Nicholas and A. R. Egan, Trace Elements in Soil: Plant–Animal Systems, Academic Press, London (1975).
- FAO Annual Fertilizer Review (1977).
- J. B. Williams, Project Report 27. Land Resources Development Centre, Tolworth Tower, Surbiton, Surrey, UK (1979).
- The manuscript was received 15 March 1981