Ägg av Strix. a. aluco L, Strix u. uralensis Pall. och Strix nebulosa lapponica Thunb
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| Format: | Article in Journal/Newspaper |
| Language: | Swedish |
| Published: |
BirdLife Finland
1929
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| Online Access: | https://ornisfennica.journal.fi/article/view/132240 |
| Description not available. |