http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nêu tầm quan trọng của nước trong cuộc sống; Vấn đề ô nhiễm nước, bảo vệ nguồn nước, tiết kiệm nước sạch
Thái Thị Ngọc Dư...[và nh. ng. khác]