TY - GEN AU - Skinner,Margaret W. TI - Hearing aid evaluation SN - 0133857174 U1 - 617.89 PY - 1988/// CY - Englewood Cliffs, N.J. PB - : Prentice-Hall KW - Hearing aids KW - E.007.814.458 KW - standards (qualifier) KW - REG.080.001 KW - United States (country of publication) ER -