000 00516cam a22001577a 4500
008 180718b1978 xxu||||| |||| 00| 0 eng d
082 _aP144 In8
100 _aHeyneman, Stephen P.
245 _aTextbooks and achievement: What we know
_cby Stephen P. Heyneman, Joseph P. Farrell and Manuel A. Sepu
260 _aWashington, D.C.
_bIBRD
_c1978
300 _a34p.
440 _aWorld Bank Staff Working Paper No.298
650 _aText Books
700 _aSepulveda-Stuardo, Manuel A.
700 _aFarrell, Joseph P.
999 _c225108
_d225108