000 00453nam a2200157Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a371.26
_bRb-61-5
100 _aLord F M
245 _aBiserial estimates of correlation
260 _aNew Jersey
_bETS
_c1961
440 _aEducational Testing Service. Princeton : Research bulletin; 5
650 _aEducational tests and measurements
942 _cBK
999 _c93607
_d93607