Title: Khwāmto̜ngkān rǣngngān læ kānkhao ʻō̜k ngān rō̜p thī 1-4, Phō̜. Sō̜. 2519 nai sūan klāng 4 čhangwat, Krung Thēp Mahā Nakhō̜n, Samut Prākān, Nonthaburī, Pathum Thānī
Description: Survey by the Department of Labor on the demand and supply of labor and labor turnover in 4 central provinces of Thailand.