
Hemp (Canabis) study (Project : Ancient Textile in Vietnam)

H'mong cloth embroidery design (H'mong textile study)

Studing in a bronze casting workshop in Lang Rong (Van Lam, Hung Yen)

During excavation 2004 in Du Sang rock-shelter ( Kim Boi, Hoa Binh)

PEG-treating in conservating a dongsonian dugout log coffin of 2300 years old
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