| 000 | 00714nam a2200241 a 4500 | ||
|---|---|---|---|
| 005 | 20210219153503.0 | ||
| 008 | 991125n 000 0 u | ||
| 035 | _aUPN01000102361 | ||
| 100 | _aSmith, Thomas Ewin | ||
| 222 | _aJOURNAL OF YOUTH AND ADOLESCENCE | ||
| 245 | _aTime use and change in academic achievement : A longitudinal follow-up | ||
| 300 | _a725-747 | ||
| 362 | _a21, No. 6, 1992 | ||
| 505 | _aJulio 1993 | ||
| 653 | 0 | _aADMINISTRACION DEL TIEMPO | |
| 653 | 0 | _aAUMENTO DEL RENDIMIENTO | |
| 653 | 0 | _aCAMBIO | |
| 653 | 0 | _aDESARROLLO DEL ADOLESCENTE | |
| 653 | 0 | _aESTUDIANTES DE BACHILLERATO ELEMENTAL | |
| 653 | 0 | _aRENDIMIENTO ACADEMICO | |
| 904 |
_aAC _b040172 |
||
| 905 | _aArticulo | ||
| 999 |
_c78158 _d78158 |
||