Samiththicha pumma. (2013) A study of language and culture of "/khi:/" (Feces) of Lao-Wiang In Nong Kop subdistrict, Banpong district, Ratchaburi province. Mahidol university:ม.ป.ท.Samiththicha pumma. 2013. A study of language and culture of "/khi:/" (Feces) of Lao-Wiang In Nong Kop subdistrict, Banpong district, Ratchaburi province. ม.ป.ท.:Mahidol university;Samiththicha pumma. A study of language and culture of "/khi:/" (Feces) of Lao-Wiang In Nong Kop subdistrict, Banpong district, Ratchaburi province. ม.ป.ท.:Mahidol university, 2013. Print.