TY  - BOOK
ED  - Indian standards institution                                                                                                                                                                                                                                   . 
TI  - Code of practice for drainage and dewatering of surface hydel power stations,IS:4721-1968 / 
U1  - 627.8 
PY  - 1982///
CY  - New Delhi : 
PB  - Indian standards institution , 
ER  -