TY  - BOOK
AU  - Bureau of Indian Standards[BIS]
TI  - IS:2720-(Pt.31)-1990. Indian standard methods of test for soils. Pt.31 : field determination of California bearing ratio (First revision)
U1  - IS Code 
PY  - 1991///
CY  - New Delhi
PB  - Bureau of Indian Standards
N1  - ENG
ER  -