000			005170000a22001810004500
245			_aSingle line railways : a handbook of management, engineering, and operation
700			_aNock, O.S.
260			_aDevon _bDavid & Charles _c1966
300			_a358, [16]p. : graphs, photos.
500			_aDiandas Collection
080			_a625.112 _bN6
650			_aRAILWAYS-SINGLE LINE
650			_aTRANSPORTATION ENGINEERING
650			_aTRANSPORT POLICY
650			_aRAILWAY-ECONOMY
041			_aEN
942			_cBK
999			_c42194 _d42194