TY  - BOOK
AU  - Attenborough, K.
AU  - Clark, S., coaut.Utley, W.A., coaut.
ED  - Building Research Establishment (Inglaterra).
TI  - Background noise levels in the united kingdom / K. Attenbor-ough , S. Clark and W.A. Utley
CY  - Watford [Inglaterra] : BRE
ER  -