TY  - BOOK
AU  - METCALZ
TI  - WASTE WATER ENGINEERING: TREATMENT- DISPOSAL 
U1  - 628.3 N79 MET/EDD 
PY  - 1979///
CY  - NEW DELHI
PB  - TATA MCGRAW-HILL PUB. COMPANY LTD.
ER  -