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1959
Night visibility 1959

Highway Research Board Bulletin, Issue 226, 64p

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1959
RETINAL SENSITIVITY AND NIGHT VISIBILITY

Highway Research Board Bulletin, Issue 226, 6p

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1959
BACKGROUND AND OBJECTIVES OF THE U.S. STANDARD FOR COLORS OF SIGNAL LIGHTS

Highway Research Board Bulletin, Issue 226, 7p

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1959
PROPOSED CHANGES IN TRAFFIC SIGNAL COLOR STANDARDS

Highway Research Board Bulletin, Issue 226, 2p

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1959
SURFACE-MOUNTED LIGHTS ON ROADWAYS FOR GUIDANCE

Highway Research Board Bulletin, Issue 226, 11p

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1959
RATINGS FOR VISUAL BENEFITS OF ROADWAY LIGHTING

Highway Research Board Bulletin, Issue 226, 29p

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1959
VISION AT LEVELS OF NIGHT ROAD ILLUMINATION IV. LITERATURE 1957-1958

Highway Research Board Bulletin, Issue 226, 6p

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1959
FACTORS OF EDUCATIONAL VALUE FOR OBTAINING SAFE NIGHT DRIVING SPEEDS

Highway Research Board Bulletin, Issue 226, 3p

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Showing 1 - 8 of 8 records