Dinfa, P. . (2023) “STUDY OF THE DEVELOPMENT OF WASTEWATER TREATMENT SYSTEMS AND THE YUAN ISLAND AS A TOURIST ATTRACTION OF NAKHON SAWAN MUNICIPALITY’S YUAN CHUAN RAK CANAL FOR DEVELOPING A GEOGRAPHICAL DATABASE AND PROGRAMED INSTRUCTION”, Journal of MCU Nakhondhat. Nakhon Si Thammarat, Thailand, 10(9), pp. 158–170. Available at: https://so03.tci-thaijo.org/index.php/JMND/article/view/270867 (Accessed: 19 May 2024).