= пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ - пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ 124 13 124
| [книга] |
| Second Regional Conference on Engineering Education, Sofia, dec. 5-7, 2003 |
| |
| Sofia : Min. of education and science |
| 2004 |
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