Thai Heritage Conservation - Sri Satchanalai Historical Park (1993)- Wat Chang Lom , 1993 , Thailand
Thai Heritage Conservation - Sri Satchanalai Historical Park (1993)- Wat Chedi Jed Thaew , 1993 , Thailand
Thai Heritage Conservation - Prasat Phanom Rung (1998) , 1998 , Thailand
International Letter Writing Week - Prasat Hin (1980)- Prasat Hin Phimai in Nakhon Ratchasima , 1980 , Thailand
International Letter Writing Week - Prasat Hin (1980)- Prasat Hin Prasat Si Khoraphum in Surin , 1980 , Thailand
International Letter Writing Week - Prasat Hin (1980) , 1980 , Thailand
Thai Heritage Conservation - Archaeological Sites (2012)- Prasat Meuang Singh in Kanchanaburi , 2012 , Thailand
Inscription on Ashoka Pillar, Lumbini , 1987 , Nepal
Important Buddhist sites , 2007 , Nepal
