TY  - BOOK
ED  - European Seminar for Sanitary engineers( 3rd : 1953 )
ED  - 
TI  - Design and operation of septic tanks: proceedings
U1  - 614.09 
PY  - 1953///
CY  - Geneva
PB  - WHO
KW  - Public health
KW  - Septic tanks
ER  -