TY  - BOOK
AU  - Bureau of Indian Standards[BIS]
TI  - IS:2911-(Pt.3)-1980. Indian standard code of practice for design and construction of pile foundations. Pt.3 : under-reamed piles
U1  - IS Code 
PY  - 2007///
CY  - New Delhi
PB  - Bureau of Indian Standards
ER  -