PT Journal AU Neal, C Neal, M Hughes, S Wickham, H Hill, L Harman, S TI Bromine and bromide in rainfall, cloud, stream and groundwater in the Plynlimon area of mid-Wales SO Hydrology and Earth System Sciences PY 2007 BP 301 EP 312 VL 11 IS 1 DI 10.5194/hess-11-301-2007 ER