1. Geology Department, University of Malaya, 50603 Kuala Lumpur, Malaysia
2. Department of Civil Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
3. Department of Plant Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
4. Department of Hydrology and Water Resources Management, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi Arabia
5. Department of Geology, Centre for Research in Biotechnology for Agriculture, University of Malaya, 50603 Kuala Lumpur, Malaysia