000 00345nam a2200121Ia 4500
008 100324s9999 xx 000 0 und d
100 _aKlein L.R
245 _aEconomic Fluctuations in United States.1921-1941
260 _bWiley
650 _aECONOMICS
942 _cBK
999 _c68215
_d68215