Reference number
Ïã¸ÛÁùºÏ²Ê¿ª½± 454:1975
Ïã¸ÛÁùºÏ²Ê¿ª½± 454:1975
Acoustics — Relation between sound pressure levels of narrow bands of noise in a diffuse field and in a frontally-incident free field for equal loudness
Edition 1
1975-01
Withdrawn
Ïã¸ÛÁùºÏ²Ê¿ª½± 454:1975
4476
Withdrawn (Edition 1, 1975)

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