TY  - BOOK
AU  - Indian Standards Institution[ISI]
TI  - IS:9901-(Pt.4)-1981. Indian standard measurements of sound insulation in buildings and building elements. Pt.4 : field measurements of airborne sound insulation between rooms
U1  - IS CODE 
PY  - 1982///
CY  - New Delhi
PB  - Indian Standards Institution
ER  -