Ooi, A. C. Brick clay investigation at Lukut Port Dickson, Negeri Sembilan / by A. C. Ooi - Ipoh : Jabatan Penyiasatan Kajibumi, 1980 - 19 p. - Report of Industrial Minerals Division ; no.Im 2/1980 . Subjects--Topical Terms: Bricks--Negeri SembilanInvestigative reporting--Negeri Sembilan