TY  - BOOK
AU  - Mara, Duncan
TI  - Sewage treatment in hot climates / Duncan Mara
U1  - B 16.5 MAR -4162   
CY  - Great Britain : English Language Book Society, 1976 r1982.
KW  - Sewage - Purification - Tropical condition
KW  - Sanitary engineering
KW  - HEA
ER  -