Evaluation of supplemental shields at railroad crossings : Final report.
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1998-12-01
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By Edgar, Rob
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Main Document Checksum:urn:sha-512:72b404b8bfd7c392a97c4bdf94e5c043c65b754fe13ca25d64244d95571f0b4f572fc39f696e910c63328ff8c8425d6909af7718d20c533a333990b387cc0e63
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