TY  - BOOK
ED  - Indian Standards Institution                                                                                                                                                                                                                                   . 
TI  - Code of practice for ancillary structures in sewage system, IS 4111(Part 3)-1985 / 
U1  - 628.362 
PY  - 1986///
CY  - New Delhi : 
PB  - Indian Standards Institution , 
ER  -