Appropriate technology for water supply and sanitation.
Shuval Hillel I.
Appropriate technology for water supply and sanitation. Night Soil Composting, volumes 10 - Washington, D.C. : The International Bank for Reconstruction and Development 1981 - 81p,
Night Soil Composting, technology for water supply and sanitation --book--Periodicals.--Periodicals.
TD899 / .S55 1981
Appropriate technology for water supply and sanitation. Night Soil Composting, volumes 10 - Washington, D.C. : The International Bank for Reconstruction and Development 1981 - 81p,
Night Soil Composting, technology for water supply and sanitation --book--Periodicals.--Periodicals.
TD899 / .S55 1981