http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Tài liệu giới thiệu về quản lí tài nguyên nước, kinh tế nước công cộng, kinh tế cấp nước tưới ...
Water supply,Cung cấp nước,Irrigation,Thủy lợi