000			00543nam a2200169Ia 4500
008			131223s9999 xx 000 0 und d
040			_aISI KOLKATA
041			_aEnglish
082			_a371.26 _bRb-64-61
100			_aCardall Carolyn
245			_aMethod for comparing the performance of different groups on the items in a test
260			_aNew Jersey _bETS _c1964
440			_aEducational Testing Service. Princeton : Research bulletin; 61
650			_aEducational tests and measurements
700			_aCoffman W E _4Auth.
942			_cBK
999			_c93947 _d93947