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Physics, 25.11.2019 01:31 RKennedy3654

When reading a seismograph, waves come first, then waves, and, finally, waves. s, p, l l, p, s p, s, l l, s, p p, l, s

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When reading a seismograph, waves come first, then waves, and, finally, waves. s, p, l l, p, s p,...
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