Title: Rāingān kānsamrūat khwāmtō̜ngkān thāng sētthakit læ sangkhom nai ʻānābō̜riwēn thī plūk fin khō̜ng Prathēt Thai
Description: Study on the socioeconomic conditions of the opium producing areas in northern Thailand.
Subjects: Economic conditions, Opium trade, Social conditions
Places: Northern Thailand