Towards greater advancement of the sago industry in the 90's: proceedings of the Fourth International Sago Symposium, Ng, T.T.Tie, Y.L.Kueh, H.S. (eds.).- Sarawak (Malaysia): Ministry of Agriculture and Community Development, 1991. p. 36-45: Sarawak (Malaysia), 6-9 Aug 1990, p. 36-45