000 00299nam a2200145Ia 4500
008 230706s9999 xx 000 0 und d
082 _a335
082 _bLEN
100 _aLENIN V.J
245 0 _aWHAT IS TO BE DONE
260 _bPROGRESS PUB
260 _c1947
650 _aEconomics
942 _cS
999 _c642
_d642