TY - BOOK AU - Fontaine,Henri AU - Ibrahim Amnan TI - The limestone of Sungai Rui and Sungai Kuak valleys, (Upper Perak) PY - 1994/// KW - Limestone KW - Perak KW - Survey N1 - Includes bibliographical references N2 - Limestone is widely exposed in a zone aligned in a nearly north-south direction, stretching over a distance of more than twelve kilometers and belonging to the drainage basins of Sungai Rui and Sungai Kuak (Northern part of the state of Perak, near the Thailand border). The limestone is interbedded with siltstone and black shale ER -