Weerakoon, A.C.J.Samarasinghe, E.L.2012-04-042012-04-041957Ceylon Journal of Science (Biological Sciences)1(2)pp.155-170https://dl.nsf.gov.lk/handle/1/7791Biological SciencesWormsInsectsNaididaeTubificidaeDipteraNematodaCrustaceaArachnidaOligochaetaChironomidaeCeratopogonidaeLimnobiidaeEarthwormsSoil fertilityMesofauna of the soil of a paddy-field in Ceylon. preliminary surveyArticle