Category:Biology in the 1850s
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This category has the following 13 subcategories, out of 13 total.
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Media in category "Biology in the 1850s"
The following 2 files are in this category, out of 2 total.
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Correspondence - Hayden (Ferdinand) and Engelmann (George) BHL43518738.jpg 4,224 × 4,930; 1.68 MB
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Duria Antiquior Farren.jpg 635 × 422; 214 KB