Title: Kānprachum Sanœ̄ Phonngān thāng Wichākān Kō̜ng Thō̜ranīwitthayā Pračham pī 2540, 22-23 Thanwākhom 2540, na hō̜ngprachum Krom Sapphayākō̜n Thō̜ranī, ʻākhān 1, chan 1
Description: Report of a meeting on geological surveys in Thailand.
Subjects: Geological surveys, Congresses
Places: Thailand