| 000 | 00410nam a2200157Ia 4500 | ||
|---|---|---|---|
| 999 |
_c23770 _d23770 |
||
| 005 | 20211229100457.0 | ||
| 008 | 180712s9999 xx 000 0 und d | ||
| 020 | _a9231016849 | ||
| 082 |
_a370 _bUNI _223 |
||
| 100 | _aUNESCO | ||
| 245 | _aLearning and working | ||
| 260 |
_aParis _bUnited Nations Educational, Scientific and Cultural Organiza _c1979 |
||
| 300 | _a344 p. | ||
| 650 | _aEducation | ||
| 942 | _cS | ||