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	1.	Compression in hearing aids : an analysis, a review and some recommendations / by Gary Walker and Harvey Dillon by Walker, Gary Dillon, Harvey National Acoustic Laboratories (Australia) Series: N.A.L. report ; no.90 Publication details: Canberra : AGPS, 1982 Availability: Items available for loan: (1). Place hold Add to cart (remove)
	2.	No cover image available The amplification requirements of persons with conductive and mixed (conductive &sensori-neural) hearing losses/ by Gary Ian Walker by Walker, Gary Ian Publication details: Sydney: Macquarie University. School of English and Linguistics ( Audiology), Nov.1994 Availability: Items available for loan: (1)Call number: 621.395.92[001.5] WAL. Add to cart (remove)