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020 _a9788120335639
037 _bRAB24-06-2011
041 _aeng
082 _a370.78 BES-R
100 _aBest, John W.
245 0 _aResearch in education/
_cJohn W. Best
250 _a10th ed.
260 _aNew Delhi:
_bPHI Learning Private Limited,
_c2009
300 _axii, 510p.
650 _aEducation-Research
942 _cBK