TY  - GEN
AU  - Kalbermatten J M, Julius D S, Gunnerson C.G.
TI  - Technical and economic options
T2  - (Appropriate technology for water supply and sanitation ; v. 1)
PY  - 1980///
CY  - Washington, D.C. : 
PB  - World Bank
KW  - Water supply
KW  - Economics
KW  - Sanitation
KW  - Technology, appropriate
ER  -