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    Road-user characteristics : presented at the thirty-first annual meeting, january, 1952

    National Research Council, Highway Research Board, USA | TIBKAT | 1952

    Design of flexible pavements : presented at the thirty-third annual meeting, january 12 - 15, 1954

    National Research Council, Highway Research Board, USA | TIBKAT | 1954

    Night visibility ; presented at the thirty-third annual meeting, January, 12 - 15, 1954

    National Research Council, Highway Research Board, USA | TIBKAT | 1954