Projekta Nr.EN 28798:1991
NosaukumsSpecification of reference levels for the calibration of narrow-band masking noise presented by air conduction from an earphone in pure tone audiometry.
Reģistrācijas numurs (WIID)9729
Darbības sfēraSpecification of reference levels for the calibration of narrow-band masking noise presented by air conduction from an earphone in pure tone audiometry.
StatussAtcelts
ICS grupa13.140