Laksana læ wiwatthanākān khō̜ng Phāsā Thai
Subtitle: khambanyāi Phāsā Thai chan sūng khō̜ng Chumnum Phāsā Thai khō̜ng Khurusaphā tangtǣ Wanphrưhatsabō̜dī thī 18 Makarākhom 2510 thưng Wanphrưhatsabō̜dī thī 15 Mithunāyon 2510
By: Khun Wičhittramāttrā.
Edition: Phim khrang thī 1.
Publisher: Samnakphim Sānsawan
Published: 1968
Place of publication: [Bangkok]
Language: tha
Number of pages: 147
Description: On characteristics and development of Thai language.
Notes: In Thai.