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    One-way streets : panel discussion held at the twenty-ninth annual meeting 1949

    National Research Council, Highway Research Board, USA | TIBKAT | 1950

    Roughness and skid resistance : presented at the thirtieth annual meeting 1951

    National Research Council, Highway Research Board, USA | TIBKAT | 1951

    Pavement marking : presented at the thirtieth annual meeting 1951

    National Research Council, Highway Research Board, USA | TIBKAT | 1951

    Reflectors and night visibility : presented at the twenty-ninth annual meeting 1949

    National Research Council, Highway Research Board, USA | TIBKAT | 1951

    Traffic surveys by post cards : presented at the thirtieth annual meeting 1951

    National Research Council, Highway Research Board, USA | TIBKAT | 1951

    Studies in night visibility : presented at the thirtieth annual meeting 1951

    National Research Council, Highway Research Board, USA | TIBKAT | 1951

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

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

    Traffic assignment : presented at the thirty-thirst annual meeting, January 1952

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

    Load capacity of roads affected by frost : presented at the thirty-first annual meeting, January 1952

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

    Pavement marking materials : presented at the thirty-first annual meeting, January 1952

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