Conservation of Ancient Sites on the Silk Road. Second International Conference on the Conservation of Grotto Sites: Mogao Grottoes, Dunhuang, Gansu Province, The People's Republic of China, 28 June–3 July 2004.
Conservation of Ancient Sites on the Silk Road. Second International Conference on the Conservation of Grotto Sites: Mogao Grottoes, Dunhuang, Gansu Province, The People's Republic of China, 28 June–3 July 2004.
