| Original language | Bulgarian |
|---|---|
| Place of Publication | Sofia |
| Publisher | Hemus |
| Publication status | Published - 1999 |
| Publication type | D4 Published development or research report or study |
| Original language | Bulgarian |
|---|---|
| Place of Publication | Sofia |
| Publisher | Hemus |
| Publication status | Published - 1999 |
| Publication type | D4 Published development or research report or study |