White and Negro spirituals, their life span and kinship, tracing 200 years of untrammeled song making and singing among our country folk, with 116 songs as sung by both races.

"The tune comparative list. One hundred and sixteen melodies of white people paired with same number of Negro-sung variants": p. [145]-227.

Life-span services : a handbook of Illinois state government agencies serving persons with developmental disabilities.

"Life span brochure."--Introd.

Extending the human life span : social policy and social ethics /

"NSF/RA 770123."

Long life hydraulic brake system. Final technical report.

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

Long life hydraulic brake system. Summary report. Final report.

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

Rail-highway crossing warning device - life cycle cost analysis. Final report.

Federal Railroad Administration, Office of Safety, Washington, D.C.

Virtual weigh station.

Indiana Department of Transportation, Indianapolis

Rail-highway crossing resource allocation model. Final report.

Federal Railway Administration, Office of Safety, Washington, D.C.

Using light emitting diodes in traffic signals -- final report.

Federal Highway Administration, Washington, D.C.

Evaluation of retroreflective sheetings for use on roadway traffic signs. Final report.

Oklahoma Department of Transportation, Oklahoma City

Evaluation of sensors for monitoring truck speeds.

Texas Department of Transportation, Austin

Evaluation of raised snowplowable pavement markers. Final report.

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

Detectable warnings: testing and performance evaluation at transit stations. Final report.

Federal Transit Administration, Washington, D.C.

New and rebuilt brake master cylinder survey and performance evaluation. Final report.

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

Truck noise IV-H: post-fleet test results on heavy duty diesel trucks having reduced noise emissions. Final report.

Transportation Department, Secretary of Transportation, Washington, D.C.