000 00243nam a2200097Ia 4500
008 230915s9999 xx 000 0 und d
050 _aHM 48.K47 1973
100 _aKERLINGER,FRED N.
245 0 _aFOUNDATIONS OF BEHAVIORAL RESEARCH
942 _cBK
999 _c87784
_d87784