TY  - BOOK
AU  - Bureau of Indian Standards[BIS]
TI  - IS:2720-(Pt.33)-1971. Indian standard methods of test for soils. Pt.33 : determination of the density in-place by the ring and water replacement method
U1  - IS Code 
PY  - 1988///
CY  - New Delhi
PB  - Bureau of Indian Standards
N1  - ENG
ER  -