http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Technology for water supply and sanitation in developing countries
WHO Study Group on Technology for Water Supply and Sanitation in Developing Countries
This report contains the collective views of an international group of experts and does not necessarily represent the decisions or the stated policy of the World Health Organization.
Technical report series (World Health Organization) 742