00311nam a2200109Ia 4500082001200000100001900012245007400031260003600105300002100141650002100162710001800183  aTR.0132  aRao, S. Kishan 0aGrowth productivity and technical change in Indian Railways 1951-1972  c1975bM.S. University of Baroda  a177p. + C D - 53  aRAILWAYS - INDIA  aKothari, V.N.