report on the archaeological investigation and research of mango and trak'yap 西藏东部吐蕃佛教造像：芒康、察雅考古调查与研究报告：report on the archaeological investigation and research of mango and trak'yap Report on the archaeological survey and excavation of Lou-Lan archaeological investigation and exploration report report on archaeological excavations in 1995 and 1997 句章故城：考古调查与勘探报告：archaeological investigation and exploration report