TY - GEN AU - Dillon,Harvey AU - Macrae,John ED - National Acoustic Laboratories (Australia) TI - Derivation of design specifications for hearing aids SN - 0644012927 PY - 1984/// CY - Canberra PB - : AGPS KW - Hearing aids KW - E.007.814.458 KW - Australia (country of publication) ER -