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1. INTERNATIONAL ROAD ROUGHNESS EXPERIMENT:ESTABLISHING CORRELATION AND A CALI/ by SAYERS,MICHAEL W. Publication: WASHINGTON: WORLD BANK, 1986 Date: 1986 Availability: No items available:
2. GUIDELINES FOR CONDUCTING AND CALIBRATING ROAD ROUGHNESS MEASUREMENTS/ by SAYERS,MICHAEL W. Publication: WASHINGTON: WORLD BANK, 1986 Date: 1986 Availability: No items available: