Wijesuriya, W.Dissanayake, D.M.A.P.Yogaratnam, N.Abeywardene, V.Puhambugoda, R.2014-07-082014-07-082001Journal of the National Institute of Plantation Management, 17(1):p.30-42https://dl-rri.nsf.gov.lk//handle/1/2336Sample size for estimation of girth in immature rubber holdingsArticle