Ooi, A. C. Brick clay investigation near Gua Musang Kelantan / by A. C.Ooi [and] P. C. Aw - Ipoh : Jabatan Penyiasatan Kajibumi, 1980 - 40 p. : ill. - Report of the Indsutrial Minerals Division; no.Im 12/1980 . Subjects--Topical Terms: Bricks--KelantanInvestigative reporting--Kelantan