00453nam a2200169Ia 4500082002500000100002200025245002900047260003000076300001400106500000500120690000600125700000500131952010600136964001700242921000900259999001500268  a309.590954bSr774.ET  aSrivastava, S. K.  aEconomics of transportb  aNew DelhibS. Chandc1971  axx, 548p.  a  a   a  00104070aISIbISId1998-07-16l0o309.590954 Sr774.ETpDP5773r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a3767  c3767d3767