Periyapperuma, K.Abeynayake, K.2014-12-162014-12-161989The Sri Lanka Forester, 19(1-2):p.47-52https://dl.nsf.gov.lk/handle/1/16580ForestryNatural forestForest plantationsPinus caribaeaSoil propertiesSoil pHSoil organic matterSoil water retentionEarthwormsSoil properties in a natural forest and a pine plantation