Pavement roughness evaluations using a Mays ride meter. Final report.

Mode of access: Internet.

Construction zone safety and delineation study. Final report.

Federal Highway Administration, Washington, D.C.

Controlling air toxics : version 2.0 : CAT.

Mode of access: Internet.

Eighty-seven pertinent paragraphs on the Negro in America /

Reproduction of typewritten copy.

Vehicle entrapment. Final report.

Federal Highway Administration, Washington, D.C.