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Making Simple Musical Instruments: A Melodious Collection of Strings, Winds, Drums & More by Bart Hopkin (1995-04-03): Amazon.com: Books
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Musical Instrument Design: Practical Information for Instrument Design: Hopkin, Bart, Scoville, John: 9781884365089: Amazon.com: Books
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Musical Instrument Design: Practical Information for Instrument Design: Hopkin, Bart, Scoville, John: 9781884365089: Amazon.com: Books
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