Category:Coal bearing formations
Subcategories
This category has the following 3 subcategories, out of 3 total.
C
K
Media in category "Coal bearing formations"
The following 2 files are in this category, out of 2 total.
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Formation periods of the most important coal deposits worldwide.svg 620 × 375; 65 KB
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Pilarsample.jpg 4,608 × 3,456; 5.57 MB