TY - JOUR A1 - Neal, C. T1 - The water quality functioning of the upper River Severn, Plynlimon, mid-Wales: issues of monitoring, process understanding and forestry JO - Hydrol. Earth Syst. Sci. J1 - HESS VL - 8 IS - 3 SP - 521 EP - 532 Y1 - 1999/11/30 PB - Copernicus Publications SN - 1027-5606 UR - http://www.hydrol-earth-syst-sci.net/8/521/2004/ L1 - http://www.hydrol-earth-syst-sci.net/8/521/2004/hess-8-521-2004.pdf ER -