| 000 | 00672nam a2200205 a 4500 | ||
|---|---|---|---|
| 005 | 20210219160306.0 | ||
| 008 | 081007s1984 mx r 000 0 spa d | ||
| 035 | _aUPN01000162571 | ||
| 049 | _aUNE | ||
| 080 | _a373.62: 331 (497.2) =20ORG No.3. | ||
| 245 | 0 | 4 | _aThe Organization of productive work in secondary technical and vocational education in the People's Republic of Bulgaria. |
| 260 |
_aParis : _bUNESCO, _c1984. |
||
| 300 | _a17 p. | ||
| 440 | 0 | _aED-84/WS/43 | |
| 690 | _aEnseñanza tecnica- Enseñanza profesional- Bulgaria | ||
| 690 | _aEducacion y empleo- Bulgaria | ||
| 690 | _aBulgaria- Enseñanza tecnica | ||
| 710 | 2 | _aUNESCO | |
| 905 | _aUNESCO | ||
| 999 |
_c134684 _d134684 |
||