00321nam a2200133Ia 4500008004100000082001500041100001700056245002400073250001200097260003300109300001200142600001600154650001700170140224s9999    xx            000 0 und d  a330.115 L2  aJohnston, J.  aEconometric methods  a2nd ed.  aNew YorkbMc Graw-Hillc1972  ax,435p.  aJ. Johnston  aEconometrics