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E.P.N. UDAYAKUMARA; R.P. SHRESTHA; L. SAMARAKOON; D. SCHMIDT-VOGT. (2010). People's perception and socioeconomic determinants of soil erosion: A case study of Samanalawewa watershed, Sri Lanka. , 25(4), 0–339. doi:10.1016/s1001-6279(11)60001-2 
10.1016/s1001-6279(11)60001-2