1. Shaw, J.N., 2001. Iron and aluminum oxide characterization for highly-weathered Alabama ultisols. Communications in soil science and plant analysis, 32(1-2): 49-64.
2. Raheem, A.A., O.O. Falola and K.J. Adeyeye, 2012. Production and Testing of Lateritic Interlocking Blocks. Journal of Construction in Developing Countries (JCDC), 17(1).33-48.
3. Pearlman, L., 1999. Subsurface containment and monitoring systems: Barriers and beyond. National Network of Environmental Management Studies Fellow for US Environmental Protection Agency. 1-61.
4. Albright, W.H., C.H. Benson and P. Apiwantragoon, 2012. Field hydrology of landfill final covers with composite barrier layers. Journal of Geotechnical and Geoenvironmental Engineering, 139(1): 1-12.
5. Navia, R., G. Hafner, G. Raber, K.E. Lorber, E. Schöffmann and W. Vortisch, 2005. The use of volcanic soil as mineral landfill liner-I. Physicochemical characterization and comparison with zeolites. Waste management & research, 23(3): 249-259.
6. Qi, G., D. Yue, J. Liu, R. Li, X. Shi, L. He, J. Guo, H. Miao and Y. Nie, 2013. Impact assessment of intermediate soil cover on landfill stabilization by characterizing landfilled municipal solid waste. Journal of environmental management, 128: 259-265.
7. Öztürk, N. and T.E.l. Bektaş, 2004. Nitrate removal from aqueous solution by adsorption onto various materials. Journal of hazardous materials, 112(1): 155-162.
8. Chiemchaisri, C., W. Chiemchaisri and T. Srisukphun, 2010. Performance of soil and compost mixture in leachate purification at intermediate cover soil of tropical landfill. International Journal of Environmental Technology and Management, 13(3-4): 269-280.
9. USEPA, 1992. Batch-Type Procedures for Estimating Soil Adsorption of Chemicals. 530SW87006F.
10. Aziz, H.A., S. Alias, M.N. Adlan, A. Asaari and M.S. Zahari, 2007. Colour removal from landfill leachate by coagulation and flocculation processes. Bioresource Technology, 98(1): 218-220.
11. Daud, Z., H.A. Aziz and M.N. Adlan, 2007. Treatment of semi- aerobic leachate by combined coagulation-flocculation and filtration method. Journal of Environmental Researh and Development Vol, 2(2). 101-110.
12. Parvathi, M. A study on soil testing using SOA and its future considerations. in Computing, Electronics and Electrical Technologies (ICCEET), 2012 International Conference on. 2012. IEEE. 894-899.
13. Safari, E. and G.N. Bidhendi, 2007. Removal of manganese and zinc from Kahrizak landfill leachate using daily cover soil and lime. Waste management, 27(11): 1551-1556.