Suwannatrai, A., Suwannatrai, K., Haruay, S., Piratae, S., Thammasiri, C., Khampoosa, P., Kulsantiwong, J., Prasopdee, S., Tarbsripair, P., Suwanwerakamtorn, R., Sukchan, S., Boonmars, T., Malone, J. B., Kearney, M. T. and Tesana, S. (2011) “Effect of soil surface salt on the density and distribution of the snail Bithynia siamensis goniomphalos in northeast Thailand”, Geospatial Health, 5(2), pp. 183–190. doi: 10.4081/gh.2011.170.