Permanent roads having a line of rails fixed to ties and laid to gage, usually on a leveled or graded ballasted roadbed and providing a track for freight cars, passenger cars, and other rolling stock. Cars are designed to be drawn by locomotives or sometimes propelled by self-contained motors. (From Webster's 3d) The concept includes the organizational and administrative aspects of railroads as well.
    

concept

Diseases of animals acts : rabies : London, Middlesex, and district (muzzling and control of dogs) order of 1919... / I.T. Williams.

Railway warrant for the use only of officers, ladies of Q.A.I. military nursing service, and the families of officers enumerated in paragraph 339, allowance regulations, travelling on duty without troops in the United Kingdom / War Office.

Diseases of animals acts : conveyance of live poultry order of 1919 / C.A. Roberts.

An outline of the central transit : in a series of six letters to Hon. John Hemphill / by Pryor Lea.

The chemical & bacteriological condition of the air on the City & South London Railway / by W. Scott Tebb.

Ueber den Transport der im Felde Verwundeten und Kranken / von Th. Billroth und J.v. Mundy. Nebst den Verhandlungen der auf Einladung der Herren Billroth, v. Mundy und Wittelshöfer im Sanitäts-Pavillon der Wiener Weltausstelung 1873 vom 6.-9. October versammelten internationalen Privat-Conferenz über Verbesserung der Pflege der im Felde Verwundeten und Kranken. 1. Abth.

Railroads

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Catalogue

An outline of the central transit : in a series of six letters to Hon. John Hemphill / by Pryor Lea.

The chemical & bacteriological condition of the air on the City & South London Railway / by W. Scott Tebb.

Medical evidence in railway accidents / by John Charles Hall.

The great stink of London : Sir Joseph Bazalgette and the cleansing of the Victorian metropolis.