IEC 60118-7:1983/AMD1:1994 Amendment 1 - Hearing aids. Part 7: Measurement of performance characteristics of hearing aids for quality inspection for delivery purposes
2005IEC 60118-7:2005 Electroacoustics - Hearing aids - Part 7: Measurement of performance characteristics of hearing aids for production, supply and delivery quality assurance purposes
1970IEC 60118-7:1983/AMD1:1994 Amendment 1 - Hearing aids. Part 7: Measurement of performance characteristics of hearing aids for quality inspection for delivery purposes
1983IEC 60118-7:1983 Hearing aids. Part 7 : Measurement of performance characteristics of hearing aids for quality inspection for delivery purposes