00296nam a2200109Ia 4500082002500000100006100025245004800086260002700134300001500161500000500176700000500181  a338.4762133bN277.ED  aNational Council of Applied Economic Research, New Delhi  aEconomics of diesel and electric tractionb  aNew DelhibNCAERc1970  axii, 115p.  a  a