TY  - BOOK
AU  - Bureau of Indian Standards[BIS]
TI  - IS:4968-(Pt.1)-1976. Indian standard method for sub-surface sounding for soils. Pt.1 : dynamic method using 50mm cone without bentonite slurry
U1  - IS Code 
PY  - 1991///
CY  - New Delhi
PB  - Bureau of Indian Standards
N1  - ENG
ER  -