00393nam a2200145Ia 450000500170000000800410001703700130005804000200007104100130009108400200010410000150012424500520013926000470019130000090023820250326124345.0250326s9999    xx            000 0 und d  aTextbook  aFMSLbengcFMSL  aeng2eng  aX:74 K4;1qFMSL  aHansen A H 0aBusiness cycles and national incomecHansen A H  aLondonbLondon, George Allen & Unwinc1964  a720p