000			00576nam a2200181Ia 4500
008			131223s9999 xx 000 0 und d
040			_aISI KOLKATA
041			_aEnglish
082			_a371.26 _bRb-68-39
100			_aCahen L S
245			_aEstimation of mean achievement scores for schools by the item-sampling technique
260			_aNew Jersey _bETS _c1968
440			_aEducational Testing Service. Princeton : Research bulletin; 39
650			_aEducational tests and measurements
700			_aRomberg T A _4Auth.
700			_aZwirner Walter _4Auth.
942			_cBK
999			_c92481 _d92481