http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
systems approach to the flexible pavement design program
Systems approach to the flexible pavement design problem
AASHO road test results, Research study number 2-8- 62-32, sponsored by the Texas Highway Department in cooperation with the U.S. Department of Transportation, Federal Highway Administration, Bureau of Public Roads.