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1. A Comprehensive Study of the Spatial Variations in the Distribution of Rare Earth Elements (REE) and Their Potential in the Coals of the Shubarkol Deposit, Kazakhstan
2. Mineralogical and Geochemical Features of Coals and Clay Layers of the Karaganda Coal Basin
3. Trace Elements Distribution in the k7 Seam of the Karaganda Coal Basin, Kazakhstan
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