National Research Council (U.S.). Highway Research Board. (1959). Night visibility 1959: Presented at the 38th Annual Meeting, January 5-9, 1959. National Academy of science.
Citace podle Chicago (17th ed.)National Research Council (U.S.). Highway Research Board. Night Visibility 1959: Presented at the 38th Annual Meeting, January 5-9, 1959. Washington: National Academy of science, 1959.
Citace podle MLA (9th ed.)National Research Council (U.S.). Highway Research Board. Night Visibility 1959: Presented at the 38th Annual Meeting, January 5-9, 1959. National Academy of science, 1959.
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