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references

  • BRADSHAW, M. E. (1976). Ed. The Natural History of Upper Teesdale. Durham County Conservation Trust Ltd.
  • BRADSHAW, M. E. & JONES, A. V. (1976). Phytosociology in Upper Teesdale. Dept. Extramural Studies, University of Durham.
  • GRIME, J. P. & CURTIS, A. V. (1976). The interaction of drought and mineral nutrient stress in calcareous grassland. J. Ecol, 64, 975.
  • JEFFREY, D. W. & PIGOTT, C. D. (1973). The response of grasslands on sugar-limestone in Teesdale to application of phosphorus and nitrogen. J. Ecol, 61, 85.
  • JOHNSON, G. A. L., ROBINSON, D. & HORNUNG, M. (1971). Unique bedrock and soils associated with the Teesdale Flora. Nature, Lond., 232, 453.
  • PIGOTT, C. D. (1956). The vegetation of Upper Teesdale in the Northern Pennines. J. Ecol, 44, 545.
  • TURNER, J. (1970). Vegetation History. In: Durham County and City with Teeside, 123. (Ed. by J. C.Dewdney) Brit. Assoc. Durham, 1970.
  • WELLS, T. C. E., SHEAIL, J., BALL, D. F. & WARD, K. L. (1976). Ecological studies on the Porton Ranges: relationships between vegetation, soils and land-use history. J. Ecol, 64, 589.