The Dongson man with war axe on his shultern as handle of a bronze dagger of 2300 years old.
A Bat Trang ceramic vase with special design of flutting scholar (Ceramic collection of Pham Huy Thong Museum)
A Dongsonian ramie cloth with colored band by indigo deyed hemp fibres
H'mong cloth with batik decoration (H'mong textile study)
Ethnobotanic Study 2005 in a Muong hamlet (Kim Boi, Hoa Binh)