TY  - BOOK
ED  - Indian standards institution                                                                                                                                                                                                                                   . 
TI  - Code of practice for lining of canals with low density polyethylene film   9698-1980 / 
U1  - 626.823 
PY  - 1981///
CY  - New Delhi : 
PB  - Indian standards institution , 
ER  -