Weil, R.R.2014-12-162014-12-161981The Ceylon Forester, 15(1-2):p.37-53https://dl.nsf.gov.lk/handle/1/16663Soil ScienceUpper Mahaweli catchmentSoil conservationSoil erosionErosion controlSheet erosionSoil conservation needs in the upper Mahaweli catchment watershed management project