Vidhana Arachchi, L.P.Fernando, A.Banda, E.M.A.T.2014-06-032014-06-031998AGM of the Agricultural Engineering Society of Sri Lanka, PGIA,University of Peradeniya, Sri Lanka. Peradeniay, 1998:p...https://dl-cri.nsf.gov.lk//handle/1/3662SoilsSubsoilingConstraintsMajor constraints in sub-soiling in coconut lands