Category:1863 books about geology
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This category has only the following subcategory.
Media in category "1863 books about geology"
The following 2 files are in this category, out of 2 total.
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Die obere Nummulitenformation in Ungarn (IA biostor-219427).pdf 593 × 1,006, 43 pages; 15.48 MB
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Catalogue of minerals with their formulas, etc (IA catalogueminerals00eglerich).pdf 762 × 1,314, 65 pages; 2.9 MB