Audiology Instruments -- See Also the narrower term Hearing aids
Here are entered works on devices to improve hearing ability. Works on synthetic replicas of the ear used to restore cosmetic harmony to the face are entered under Ear prostheses.
Here are entered works on all types of media used for the recording of sound including cylinders, analog discs, digital discs, films, tapes, and wires, as well as works about analog discs alone.
--subdivision Audio-visual aids under subjects; and subdivision Study and teaching--Audio-visual aids under subjects for the use of audio-visual aids in the learning and teaching of those subjects, e.g. Geography--Study and teaching--Audio-visual aids
--subdivision Audio-visual aids under subjects; and subdivision Study and teaching--Audio-visual aids under subjects for the use of audio-visual aids in the learning and teaching of those subjects, e.g. Geography--Study and teaching--Audio-visual aids
