On history of Thailand during the Ayutthaya period, based on the royal chronicle; festschrift on the 90th birth anniversary of Warunyupha Sanitwong Na Ayutthaya, counselor to the Historical Association of Thailand.History of Thailand during the Ayutthaya Kingdom from inscriptions; volume commemorating 90th birth anniversary of Warunyupha Sanitwong Na Ayutthaya, senior counselor at the Historical Society Under the Patronage of H.RH. Princess Maha Chakri Siridhorn.