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Enhancements to passive warning devices at railroad-highway grade crossings.

APA Citation

Fambro, D. B., Beitler, M. M., Hubbard, S. M. (1994). Enhancements to passive warning devices at railroad-highway grade crossings. .

Fambro, Daniel B, Michael M Beitler, and Sarah M Hubbard. Enhancements to Passive Warning Devices At Railroad-highway Grade Crossings. , 1994.

Warning: These citations may not always be complete (especially for serials).