| 000 | 00720nam a2200193 a 4500 | ||
|---|---|---|---|
| 005 | 20210219160228.0 | ||
| 008 | 080926s1991 mx r 000 0 spa d | ||
| 035 | _aUPN01000161204 | ||
| 049 | _aUNE | ||
| 080 | _a371.212. 72 (675.97) =20GRA No.7. | ||
| 245 | 0 | 0 |
_aIs Grade repetition always wasteful? new data and unanswered questions / _cJohn Schwille... (et al.) - |
| 260 |
_aUSA : _bHarvard University Institute for International Development, _c1991. |
||
| 300 |
_aiv, 21 p. ; _bil., fot. |
||
| 440 | 0 |
_aBRIDGES Research Report Series ; _v7. |
|
| 690 | _aRepeticion- Grados (Divisiones del ciclo escolar)- Burundi | ||
| 690 | _aDesercion escolar- Burundi | ||
| 700 | 1 | _aSchwille, John, coaut. | |
| 905 | _aUNESCO | ||
| 999 |
_c133317 _d133317 |
||