http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Ô nhiễm và lành mạnh hóa môi trường ( ở thành phố HCM. )
Trần Khương Kiều, Mai Trường Xuân
environmental protection,vietnam - ho chi minh city - social problems