TY  - BOOK
AU  - Kalbermatten , John M.
AU  - Julius , De Anne S
AU  - Gunneson , Charles G.
TI  - Appropriate sanitaton alternatives a technical and economic appraisal 
SN  - 0801825784
U1  - 628.1091724 
PY  - 1949///
CY  - New York 
PB  - World bank 
KW  - SANITARY ENGINEERING
KW  - UNDERDEVELOPED AREAS
ER  -