TY - BOOK TI - A report prepared for the Perak State Development Corporation: a preliminary study of plastik clays for potential use in the ceramic industries park PY - 1991/// KW - Sediments (Geology) KW - Perak N2 - Pleistocene clay lenses overlain by Holocene clays, sands and loams are found in the quaternary deposits of southern Perak State. two sites have been investigated ; Changkat Chermin and Changkat Jong, 40 kilometres and 50 kilometres respectively south - west and south of Ipoh ER -