Railroad crossing wayside horn evaluation /
by Joseph E. Hummer, Mohammad Reza Jafari.

APA Citation

Hummer, J. E., Jafari, R., North Carolina State University. Department of Civil, C., North Carolina. Department of Transportation. Research and Analysis Group. (2007). Railroad crossing wayside horn evaluation. Raleigh, NC: North Carolina Dept. of Transportation.

MLA Citation

Hummer, Joseph E, Reza Jafari, Construction North Carolina State University. Department of Civil, and North Carolina. Department of Transportation. Research and Analysis Group. Railroad Crossing Wayside Horn Evaluation. Raleigh, NC: North Carolina Dept. of Transportation, 2007.