George, I., and D. Mbere-obong. “SPATIAL DISTRIBUTION OF LYMPHATIC FILARIASIS IN CROSS RIVER STATE, NIGERIA: A GEOGRAPHICAL INFORMATION SYSTEMS (GIS) STUDY”. International Journal of Research -GRANTHAALAYAH, vol. 4, no. 12, Dec. 2016, pp. 101-9, doi:10.29121/granthaalayah.v4.i12.2016.2398.