KS I ISO 389-3:2003 Acoustics-Reference zero for the calibration of audiometric equipment-Part 3:Reference equivalent threshold force levels for puretones and bone vibrators
2020KS I ISO 389-3:2020 Acoustics — Reference zero for the calibration of audiometric equipment — Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators
2014KS I ISO 389-3:2014 Acoustics — Reference zero for the calibration of audiometric equipment — Part 3: Reference equivalent threshold force levels for pure tones and bone vibrator
2003KS I ISO 389-3:2003 Acoustics-Reference zero for the calibration of audiometric equipment-Part 3:Reference equivalent threshold force levels for puretones and bone vibrators