000 00299nam a2200121Ia 4500
008 210430s9999 xx 000 0 und d
082 _a371B5541 R
100 _aJohn W.Best
245 _aResearch in Education
_cJohn W.Best
260 _aIslamabad
_bMayo
_c2006
300 _a498p
942 _cBK
_2ddc
999 _c561406
_d561406