TY  - BOOK
ED  - Indian standards institution                                                                                                                                                                                                                                   . 
TI  - Code of practice for maintenance of canals. Part-1 unlined canals,IS:4839-1979 / 
U1  - 626.14 
PY  - 1979///
CY  - New Delhi : 
PB  - Indian standards institution , 
ER  -