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An integrated-circuit piano tuner for the equal-tempered keyboard employing a tuneable fixed-coefficient digital filter 1969 [LEATHER BOUND]

An integrated-circuit piano tuner for the equal-tempered keyboard employing a tuneable fixed-coefficient digital filter 1969 [LEATHER BOUND]

Regular price $14.99 USD
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An integrated-circuit piano tuner for the equal-tempered keyboard employing a tuneable fixed-coefficient digital filter 1969 [LEATHER BOUND]

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