https://archive.li.mahidol.ac.th/handle/0280026809/313 Books Mon, 22 Jun 2026 13:51:56 GMT 2026-06-22T13:51:56Z https://archive.li.mahidol.ac.th:443/bitstream/id/3872/ https://archive.li.mahidol.ac.th/handle/0280026809/313