People-centred approaches to water and environmental sanitation : proceedings of the 30th WEDC Conference ; Vientiane, Lao PDR, 2004 /
WEDC Conference(30th :2004 :Lao National Cultural Hall, Vientiane, Laos)
Godfrey, Sam.
Water, Engineering, and Development Centre.
[Loughborough] : Water, Engineering and Development Centre, Loughborough University,
2004.
Includes bibliographical references and index.
Water-supply
Sanitation
Hygiene