Obsidian sourcing at Huluga Open Site an evidence of exchange?

Obsidian sourcing at Huluga Open Site an evidence of exchange?

Xehetasun bibliografikoak
Egile nagusia: Neri, Leee Anthony M.
Formatua: Thesis
Hizkuntza:English
Argitaratua: 2003.
Gaiak:
Obsidian > Philippines > Huluga Open Site (Cagayan de Oro City).
Commerce, Prehistoric > Philippines > Huluga Open Site (Cagayan de Oro City).
Archaeology > Methodology.