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	1.	No cover image available ISO 389-3. Acoustics - reference zero for the calibration of audiometric equipment -. Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators. 2016-02-01 by Standards Australia Edition: 2nd Material type: Text; Format: print ; Literary form: Not fiction Publication details: Geneva International Standards Organisation 2016 Availability: No items available. Add to cart (remove)
	2.	No cover image available ISO 389-7. Acoustics - Reference zero for the calibration of audometric equipment. Part 7: Reference threshold of hearing under free-field and diffuse-field listeneing considitons Amendment 1: Reference thereshold of hearing at 20 Hz and 18 000 Hz under free-field listeneing conditions and at 20 Hz under diffuse-field listening conditions by Standards Australia Material type: Text; Format: print ; Literary form: Not fiction Publication details: Geneva International Standards Association 2016 Availability: No items available. Add to cart (remove)

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