DIN EN 29052-1:1992-08 Acoustics; determination of dynamic stiffness; part 1: materials used under floating floors in dwellings; german version EN 29052-1:1991
1992DIN EN 29052-1:1992-08 Acoustics; determination of dynamic stiffness; part 1: materials used under floating floors in dwellings; german version EN 29052-1:1991
1992DIN EN 29052-1:1992 Acoustics; determination of dynamic stiffness; part 1: materials used under floating floors in dwellings; german version EN 29052-1:1991