Karunaratne, S.W.Goonewardena, L.Medagama, D.D.2013-05-082013-05-081971Journal of the Rubber Research Institute of Sri Lanka47(1-2)pp.65-69https://dl-rri.nsf.gov.lk/handle/1/1557Evaluation of locally available raw material in the natural rubber industry part 1: graphiteA