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Citace podle Chicago (17th ed.)Office of Highway Safety, U.S. Bureau of Public Roads. Improvement of the Present System of Traffic Accident Records. Evanston, Ill: Traffic Institute, Northwestern University, 1963.
Citace podle MLA (9th ed.)Office of Highway Safety, U.S. Bureau of Public Roads. Improvement of the Present System of Traffic Accident Records. Traffic Institute, Northwestern University, 1963.
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