Items where Author is "Butterfield, D."

Heathwaite, A. L. and Fraser, A. I. and Johnes, P. J. and Hutchins, M. and Lord, E. and Butterfield, D. (2003) The Phosphorus Indicators Tool : a simple model of diffuse P loss from agricultural land to water. Soil Use and Management, 19 (1). pp. 1-11. ISSN 0266-0032

Heathwaite, Ann Louise and Fraser, A. I. and Harrod, T. R. and Johnes, P. J. and Butterfield, D. and Lord, E. I. and Hutchins, M. and Withers, P. J. A. (2001) Towards a National Consensus on Indicators of P Loss to Water from Agriculture. DEFRA.

Heathwaite, Ann Louise and Fraser, A. and Johnes, P. and Lord, E. I. and Harrod, T. and Butterfield, D. and Withers, P and Hutchins, M. (2001) Towards a national consensus on indicators of phosphorus loss to water from agriculture. In: International Phosphorus Transfer Workshop (IPTW) Connecting Phosphorus Transfer from Agriculture to Impacts in Surface Waters, 2001-08-28 - 2001-09-01, Plymouth.