000			00558nam a2200181Ia 4500
008			131223s9999 xx 000 0 und d
040			_aISI KOLKATA
041			_aEnglish
082			_a371.26 _bRb-70-47
100			_aCahen L S
245			_aPrediction of sprlling difficulty, 2 _bregression analysis model one
260			_aNew Jersey _bETS _c1970
440			_aEducational Testing Service. Princeton : Research bulletin; 47
650			_aEducational tests and measurements
700			_aJohnson S K _4Auth.
700			_aWiley D E _4Auth.
942			_cBK
999			_c92968 _d92968