North Dakota roughometer study, 1965
By: prepared by North Dakota State Highway Department Planning and Research, in cooperation with U.S. Department of Commerce, Bureau of Public Roads.
Contributors: North Dakota. State Highway Dept. Planning and Research Division.; United States. Bureau of Public Roads.
Publisher: The Dept.?
Published: 1965
Place of publication: [Bismarck
Language: eng
Number of pages: 24
Subjects: Pavements -- North Dakota -- Testing.; Roads -- Riding qualities -- North Dakota -- Measurement.