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“Brüel & Kjær 2304 Level Recorder (1)”. n.d.
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“Brüel & Kjær 2304 Level Recorder (2)”. n.d.
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“Handmade Paper Waterfall Plot: Mississippi (1)”. n.d.
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“Handmade Paper Waterfall Plot: Beethoven’s 8Th Symphony (1)”. n.d.