00516nam a2200169Ia 4500082002500000100001700025245007400042260005200116300001500168500000500183690000600188700000500194952010600199964001700305921000900322999001500331  a309.5150973bF655.RA  aFogel, R. W.  aRailroads and American economic growthbessays in econometric history  aBaltimorebJohns Hopkins University Pressc1964  axvi, 296p.  a  a   a  00104070aISIbISId1998-07-16l0o309.5150973 F655.RApDP2540r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a3743  c3743d3743