ʻĒkkalak Thai 21.
Contributors: Witthayālai Khrū Sūan Dusit.
Publisher: Witthayālai Khrū Sūan Dusit
Published: 1978
Place of publication: [Krung Thēp Mahā Nakhō̜n]
Language: tha
Number of pages: 168
Subjects: Thailand -- Civilization.
Other titles: ʻĒkkalak Thai yīsipʻet.
Notes: Includes bibliographies.
In Thai.