Toxicity study of effluent discharged from Bintulu, Labuan and Miri crude oilterminals, and from Lutong refinery / by Khoo Khay Huat ... (et al.). - Kuala Lumpur : Petronas, 1991. - 110 p. ; 21 cm. Subjects--Topical Terms: Effluent quality--Sarawak.