000 00367nam a2200133Ia 4500
008 240201s2009 xx 000 0 eng d
020 _a9780415476171
082 _a370.15'23 HAT
100 _aHATTIE, JOHN
245 0 _aVISIBLE LEARNING: A SYNTHESIS OF OVER 800 META-ANALYSES RELATING TO ACHIEVEMENT
260 _bROUTLEDGE
_c2009
300 _a378
942 _2ddc
_cBK
999 _c3709
_d3709