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| LEADER |
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| 008 |
200515s9999||||xx |||||||||||||| ||und|| |
| 016 |
3 |
9 |
|
| 084 |
|
|
|a 20.1
|b D 96
|2 NNA
|
| 100 |
|
|
|a Dyulgerov N.
|
| 110 |
|
|
|a Expert opinion
|
| 245 |
|
0 |
|a Nature protection is a social necessity
|b Chairman of the Commit. for environ. Protection at the Council of Ministers of the People's Republic of Bulgaria
|
| 260 |
|
|
|c 1989
|a София
|b Пресс
|
| 300 |
|
|
|a 17
|
| 546 |
|
|
|a Англи
|
| 942 |
|
|
|c BK
|
| 952 |
|
|
|0 0
|1 0
|2 NNA
|4 0
|6 129406
|7 0
|9 406258
|a URNU
|b URNU
|c 2
|d 2021-08-10
|e Khudaldaa
|g 2.64
|l 0
|o 129406
|p 005020129406
|r 2021-08-10
|w 2020-05-15
|y BK
|
| 999 |
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|c 233080
|d 233137
|