54 resultados para low level radio frequency
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National Highway Traffic Safety Administration, Washington, D.C.
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National Highway Traffic Safety Administration, Washington, D.C.
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Mode of access: Internet.
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National Highway Traffic Safety Administration, Office of Driver and Pedestrian Programs, Washington, D.C.
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National Highway Traffic Safety Administration, Washington, D.C.
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Description based on: Apr. 1, 1978; title from cover.
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"May 13, 1981."
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v.1 Summary -- v. 2. Frequency allocations and network designs -- v.3 Technology studies
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"March 1992"--Cover.