The new college course map and transcript files : changes in course-taking and achievement, 1972-1993 ; based on the postsecondary records from two national longitudinal studies /

Includes bibliographical references (p. 282-284)

An analysis of guardrail and median barrier accidents using the Longitudinal Barrier Special Studies (LBSS) file. Volume I: final report.

Federal Highway Administration, Office of Safety and Traffic Operations Research and Development, McLean, Va.

An analysis of guardrail and median barrier accidents using the Longitudinal Barrier Special Studies (LBSS) file. Volume II: users guide.

Federal Highway Administration, Office of Safety and Traffic Operations Research and Development, McLean, Va.

Fundamental studies in the longitudinal control of automated ground vehicles /

Mode of access: Internet.

Longitudinal barriers for buses and trucks state-of-the-art. Final report.

Texas State Department of Highways and Public Transportation, Transportation Planning Division, Austin