1. Adie GU, Osibanjo O (2009) Assessment of soil-pollution by slag from an automobile battery manufacturing plant in Nigeria. Afr J Environ Sci Technol 3(9):239–250
2. Alexandrov EA (1972) Manganese: Element and geochemistry. Encyclopaedia of geochemistry and environmental sciences, vol IVA. Van Nostrand Reinhold, New York
3. Astera M (2010) Soil CEC explained: understanding, measuring and using cation exchange capacity for nutritious crops. Acres USA 40(3):25–28
4. ASTM (1963) Standard test method for particle size analysis of soils (reapproved 1998). D422-63. ASTM International, West Conshohocken
5. Atlas Steels (2010) Atlas steels technical handbook of stainless steels. Atlas Steels Technical Department, Australia