000 00329nam a2200145Ia 4500
008 130410s9999 xx 000 0 und d
100 _aSEN,.A.K.
245 _aCOLLECTIVE CHOICE AND SOCIAL WELFARE
250 _a
260 _bHALDEN -DAY
_a
_c1970
270 _aLONDON
300 _a
650 _aGENERAL
_b
942 _2ddc
_cBK
999 _c4750
_d4750