000 00315nam a2200121Ia 4500
001 160876
008 170722s9999 xx 000 0 und d
100 _aBlack, Thoams R.
245 _aEvaluating social science research /
260 _aLondon :
_bSage ,
_c1993.
653 _aSocial Science Research
942 _cGEN
999 _c113891
_d113891