Hmong twisting hemp fibres (Hmong textile study)
10.500 years old chared fruit stone fragments of Canarium fruit as food remains excavated in the Hoabinhian cave of Con Mong (Thanh Hoa, Vietnam)
The dongsonian bronze drum excavated in burial field Dong Xa (Kim Dong, Hung Yen, Vietnam) in detail.
During excavation 2004 in Du Sang rock-shelter ( Kim Boi, Hoa Binh)
The S.E.M image to look for prehistoric bacterien from a Dongsonian ramie cloth fabric.