TY  - BOOK
ED  - Indian standards institution                                                                                                                                                                                                                                   . 
TI  - Code of practice for design , construction and maintenance of relief wells  IS:5050-1968 / 
U1  - 627.8 
PY  - 1984///
CY  - New Delhi : 
PB  - Indian standards institution , 
ER  -