Soluble reactive phosphorus levels in rainfall, cloud water, throughfall, stemflow, soil waters, stream waters and groundwaters for the Upper River Severn area, Plynlimon, mid Wales. - Neal,C..; Reynolds,B..; Neal,M..; Hughes,S..; Wickham,H..; Hill,L..; Rowland,P..; Pugh,B.. (The Science of the Total Environment, 2003)