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Please note that this book is now out of print, though you may be able to obtain copies from The Hugh Hetherington On-line Hearing Aid Museum in the USA.
If you live near or are visiting London, you can also purchase these books from Fletcher Wallis, who has a stall at Units 60 and 62, Admiral Vernon Arcade, Portobello Road, only on Saturdays 8.30-3.30. Please address all further enquiries to Fletcher Wallis |
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