000 00481nam a2200157Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a371.26
_bRb-64-56
100 _aLord F M
245 _aNote on the normal ogive or logistic curve in item analysis
260 _aNew Jersey
_bETS
_c1964
440 _aEducational Testing Service. Princeton : Research bulletin; 56
650 _aEducational tests and measurements
942 _cBK
999 _c93942
_d93942