TY  - BOOK
AU  - Sivakumar, T. 
TI  - A text book of environmental chemistry and engineering: (for undergraduate classes and all engineering students) 
SN  - 9789380008684
U1  - 628.0154 
PY  - 2007///
CY  - Perambalur 
PB  - Mercury Printers & Publishers 
KW  - Sanitary engineering
ER  -