http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
This volume gives an illuminating and comprehensive account of the nature and history of the cultured pearl. Covered are history of the tremendous efforts.
Cultured pearls,Nuôi cấy ngọc trai,Pearl industry and trade,Ngành công nghiệp ngọc trai và thương mại