TY  - BOOK
ED  - Indian standards institution                                                                                                                                                                                                                                   . 
TI  - Guide for laying combination lining for existing unlined canals,IS:5690-1982 / 
U1  - 626.823 
PY  - 1982///
CY  - New Delhi : 
PB  - Indian standards institution , 
ER  -