Iqbal, M.A. and Salim, A.M.A. and Siddiqui, N.A. and Baioumy, H. and Ali, S.H.  (2017) Petrographic investigations and reservoir potential of shallow marine sandstone: A case study from Nyalau Formation, Sarawak Basin, Malaysia.  ARPN Journal of Engineering and Applied Sciences, 12 (21).  pp. 6255-6264.  ISSN 18196608