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

Studing on the dongsonian bronze drum excavated in burial field Dong Xa (Kim Dong, Hung Yen, Vietnam)

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

Experiment in Van Phuc (Ha Dong) silk workshop to reproduct the Dongsonian ramie and hemp cloth fabrics (Project : Ancient Textile in Vietnam)

Skull at Bach Dang poles excavation
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