TY  - BOOK
ED  - Bureau of Indian Standards                                                                                                                                                                                                                                     . 
TI  - Code of practice for sub surface exploration for earth and rockfill dams 6955-1973 / 
U1  - 627.89 
PY  - 1988///
CY  -  : 
PB  - Bureau of Indian Standards , 
ER  -