共 2 条
- [1] COMPARISON OF THE ATTENUATION CHARACTERISTICS OF THE ACOUSTIC REFLEX AND THE V51-R EARPLUG JOURNAL OF AUDITORY RESEARCH, 1961, 1 (02): : 111 - 116
- [2] ATTENUATION PROVIDED BY FINGERS PALMS TRAGI AND V51R EAR PLUGS JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1967, 41 (06): : 1545 - &