Nadarajah, M.Rajasingham, M.Muthukuda, D.S.jayasinghe, P.P.2013-05-082013-05-081971Journal of the Rubber Research Institute of Sri Lanka47(1-2)pp.20-29https://dl-rri.nsf.gov.lk/handle/1/1551Some suggested improvements in the grading of pale crepeA