Railroad safety program
Subtitle: task II, final report
By: prepared for NASA Headquarters by Ecosystems International, Inc.
Contributors: United States. National Aeronautics and Space Administration.; Ecosystems International.
Series: NASA-CR -- 173598.; NASA contractor report -- NASA CR-173598.
Publisher: Ecosystems International
Published: 1983
Place of publication: Crofton, Md
Language: eng
Format: Microform
Subjects: Railroads -- United States -- Safety measures.
Notes: "October 1983"--Cover.

"N84-26483"--Microfiche header.

Microfiche. [Washington, D.C.? : National Aeronautics and Space Administration], 1984. 2 microfiches ; 11 x 15 cm.