Alternative sign sequences for work zones on rural highways. Executive summary. Final report.

Federal Highway Administration, Office of Research and Development, Washington, D.C.

Comparison of signs and markings for passing/no-passing zones. Executive summary.

Federal Highway Administration, Office of Research, Washington, D.C.

Comparison of signs and markings for passing/no-passing zones. Final report.

Federal Highway Administration, Office of Research, Washington, D.C.

Culture conflict and crime,

Mode of access: Internet.

The federal role in unemployment compensation administration /

Mode of access: Internet.

Executive summary and abstract for the report entitled "An evaluation of warning and regulatory signs for curves on rural roads."".

Federal Highway Administration, Office of Research, Washington, D.C.

Executive summary and abstract for the report entitled "An evaluation of signs for sight-restricted rural intersections."".

Federal Highway Administration, Office of Research, Washington, D.C.

Sioux City-Woodbury County Alcohol Safety Action Project. 1975 household survey.

National Highway Traffic Safety Administration, Washington, D.C.

Effective warning devices for parked/disabled vehicles. Executive summary. Final report.

Federal Highway Administration, Office of Research and Development, Washington, D.C.

Effective warning devices for parked/disabled vehicles. Final report.

Federal Highway Administration, Office of Research and Development, Washington, D.C.

Index to the hearings on the Codes of fair competition held under the National Industrial Recovery Act /

Index to the film copies made by Joint Committee on Materials for Research of the The American Council of Learned Societies and the Social Science Research Council.

Patrol saturation study. Final report.

Alcohol Safety Action Project--Sioux City, Iowa

The behavior modification school follow-up study. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

The older population of the United States,

Bibliographical footnotes.

Local community fact book, 1938 ....

Mode of access: Internet.