Visibility criteria for signs, signals, and roadway lighting
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書誌事項
Visibility criteria for signs, signals, and roadway lighting
(Transportation research record, 1247)
Transportation Research Board, National Research Council, 1989
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注記
Papers originally presented at the Symposium on Visibility Criteria for Signs, Signals, and Roadway Lighting, held Aug. 1988 in Minneapolis, Minn
Includes bibliographical references