TY  - BOOK
AU  - Indian Standards Institution[ISI]
TI  - IS:9901-(Pt.9)-1986. Indian standard measurements of sound insulation in buildings and building elements. Pt.9 : laboratory measurements of room-to-room airborne sound insulation of a suspended ceiling with a plenum above it
U1  - IS CODE 
PY  - 1986///
CY  - New Delhi
PB  - Indian Standards Institution
ER  -