TY - BOOK TI - Acoustics - hearing protectors: part 4 : measurement of effective sound pressure levels for level-dependent sound-restoration ear-muffs; Department of Standards Malaysia T2 - MS 1732: PART 3 : 2004 U1 - MS 1732 PART4 2004 PY - 2004/// CY - Putrajaya PB - Department of Standards Malaysia KW - Standardization KW - Malaysia ER -