Title: Rāingān kānsamrūat khō̜mūn kīeokap kānkračhai rāidāi khō̜ng prachākō̜n, Phō̜. Sō̜. 2532, nai sūan khō̜ng sathān prakō̜pkān læ lūkčhāng
Description: Survey report on the income distribution among labor class population in Thailand, 1989.