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-- See Also the narrower term Aeronautics

-- See Also the narrower term Air travel

-- See Also the narrower term Broadcasting

-- See Also the narrower term City traffic

-- See Also the narrower term Communications, Military

--subdivision Communication systems under names of individual military services, e.g. United States. Navy--Communication systems; and subdivision Communications under individual wars, e.g. World War, 1939-1945--Communications

-- See Also the narrower term Express service

-- See Also the narrower term Messengers

-- See Also the narrower term Postal service

--subdivision Postal service under individual wars and names of individual military services, e.g. World War, 1939-1945--Postal service; United States. Army--Postal service

-- See Also the narrower term Radio

--subdivision Radio equipment under subjects, e.g. Automobiles--Radio equipment; and headings beginning with the word Radio

-- See Also the narrower term Railroads

--names of individual railroads; and headings beginning with the word Railroad

-- See Also the narrower term Route surveying
Here are entered works on surveying for the location of routes of transportation and communication, including cableways, canals, pipe-lines, railroads, roads, transmission lines, and tunnels. Works limited to a route survey of one of these would be entered under the appropriate heading with subdivision Surveying, e.g. Railroads--Surveying; Roads--Surveying.

-- See Also the narrower term Shipping
Here are entered general works on the transportation of persons or goods by water, as well as on the vessels used in this activity. Works confined to inland or coastal water transportation, in general, are entered under the headings Inland water transportation or Coastwise shipping. Works on water transportation on individual lakes, rivers, etc. are entered under Shipping subdivided by the name of the lake, river, etc. Works on ocean-going merchant fleets are entered under the heading Merchant marine.Works on shipping in the sense of the dispatch of goods by any means of transportation are entered under the heading Shipment of goods when relating to the activities of the shipper, or Freight and freightage when relating to those of the carrier.

-- See Also the narrower term Taxicabs

-- See Also the narrower term Telegraph

-- See Also the narrower term Telephone

-- See Also the narrower term Traffic regulations
Here are entered works on laws regulating traffic on highways and streets. Works on the law governing the laying out, construction, repair, and use of highways and streets are entered under Highway law.

-- See Also Transportation

--subdivision Transportation under subjects