000 00296nam a2200109Ia 4500
008 211217s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aAlchourron, Carlos E
245 0 _aNormative Systems
260 _bSpringer-Verlag
_aNewYork
_c1971
942 _c1
999 _c152230
_d152230