00597cam a22002051 4500 ca 15001304 DLC 20260227111100.0 821210s1915 dcu b 000 0 eng ca 15001304 (OCoLC)16763301 DLC OrPS DLC premarc Z7234.C82 B8 Association of American Railroads. Bureau of Railway Economics. Library. List of references on grade crossings. [Washington, 1915] 27 numb. l. 33 x 21 cm. Railroad crossings Bibliography. 14859 14859