TY  - BOOK
AU  - Bureau of Indian Standards[BIS]
TI  - IS:4031-(Pt.2)-1999. Indian standard methods of physical tests for hydraulic cement. Pt.2 : determination of fineness by blaine air permeability method. 
U1  - IS CODE 
PY  - 1999///
CY  - New Delhi
PB  - Bureau of Indian Standards
ER  -