Annual report / The Pennsylvania Transportation Institute, The Pennsylvania State University
1978 - 2002/03
Journal
English
Status report / The Pennsylvania Transportation Institute, The Pennsylvania State University
TIBKAT | Nachgewiesen 1973/74(1974) - 1977
|PTI annual report - Pennsylvania Transportation Institute
TIBKAT | 2003/04 -
|Online Contents | 2006
Transportation Profile: Pennsylvania
NTIS | 2002