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	21.	Hearing, vision, communication and older people / Norman P. Erber by Erber, Norman P Material type: Text; Format: print ; Literary form: Not fiction Publication details: Clifton Hill, [Vic.] : Clavis Publishing, 2002 Availability: Items available for loan: National Acoustic Laboratories (1)Call number: 362.423 ERB. Place hold Add to cart (remove)
	22.	No cover image available IEEE Std 269- 2002. IEEE standard methods for measuring transmission performance of analog and digital telephone sets, handsets, and headsets by Institute of Electrical and Electronics Engineers Material type: Text; Format: print ; Literary form: Not fiction Publication details: Geneva IEEE 2002 Availability: Items available for loan: National Acoustic Laboratories (1)Call number: IEEE Std 269-2002. Place hold Add to cart (remove)
	23.	No cover image available ITU-T. P. 57 (07/2002). Series P: telephone transmission quality, telephone installations, local line networks. Objective measuring apparatus. Artificial ears. by International Telecommunication Union Material type: Text; Format: print ; Literary form: Not fiction Publication details: Geneva ITU 2002 Availability: Items available for loan: National Acoustic Laboratories (1)Call number: ITU-T P. 57. Place hold Add to cart (remove)

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