00254nam a2200121Ia 4500082002000000100001800020245002800038250000800066260003300074300001500107500000500122700000500127  a338.54bG664.BF  aGordon, R. A.  aBusiness fluctuationsb  a2nd  aNew YorkbHarper & Rowc1961  axvi, 687p.  a  a