TY  - BOOK
AU  - Bureau of Indian Standards[BIS]
TI  - IS:4031-(Pt.12)-1988. Indian standard methods of physical tests for hydraulic cement. Pt.12 : determination of air content of hydraulic cement mortar
U1  - IS CODE 
PY  - 1988///
CY  - New Delhi
PB  - Bureau of Indian Standards
ER  -