| 000 | 003110000a22000970004500 | ||
|---|---|---|---|
| 245 | _aThird session of the international working group on environmental education and training of engineers : 3rd , 3-7 Sept. 1979, pt.1: final report | ||
| 110 | _aUNESCO | ||
| 080 |
_a62:37 _bU6 |
||
| 041 | _aEN | ||
| 942 | _cBK | ||
| 999 |
_c113449 _d113449 |
||