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Mid-winter numbers of waterbirds in Bulgaria (1977-2001) : results from 25 years of mid-winter counts carried out at the most important Bulgarian wetlands /
The present book for the first time in Bulgaria summarizes results from 25 years of counts in the most important wetlands in the country referring to the Mid-winter numbers of the waterbirds there. This long-term survey is a part of the regular counts of Divers, Grebes, Pelicans, Cormorants, Swans,...
| Cote: | Libro Electrónico |
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| Format: | Électronique eBook |
| Langue: | Inglés Bulgarian |
| Publié: |
Sofia :
Pensoft,
2003.
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| Accès en ligne: | Texto completo |