000 00390nam a2200133Ia 4500
008 100324s9999 xx 000 0 und d
100 _aLockhead M.E
245 _aSchool effects on achievement in secondary mathematics and Portuguese in Brazil
260 _c0
_bWorld Bank
_aWashington DC
366 _b0
650 _aAccounting
942 _cBK
999 _c73719
_d73719