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Reversing Warning Systems: Measuring Report-GREWUS "PeTer" free-field tests (Grewus) |
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2020-08-07 |
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Reserving warning sound measurement: 7 m proposal (Grewus) |
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2020-10-16 |
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Verification method for reversing warning with self-adjusting sound level (Grewus) |
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2020-10-29 |