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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
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
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