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The Sonic II ear valve rubber earplug and the silicone diaphragm that... | Download Scientific Diagram
Mean binaural attenuation values of (1) participant-fitted plugs (Sonic... | Download Scientific Diagram
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Health Enterprises ACU-LIFE Shooter's Ear Plugs (Sonic Valve II) (NRR 18) - Universal Fit Shooting and Hunting Ear Plugs
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