http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Objective criteria for guardrail installation
[by] John C. Glennon and Thomas N. Tamburri.
At head of title: State of California, Transportation Agency, Dept. of Public Works, Division of Highways, Traffic Dept.
"Research project accomplished with the cooperation of the U.S. Bureau of Public Roads, B0104, HPR1(3)."