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2. Carbonatites of the Refunsa Valley, Feira, Northern Rhodesia;Bailey;North. Rhod. Min. Labor Mines Bull.,1960
3. The H8 Dolomite Host Rock of the Bayan Obo Iron-Rare-Earth-Element Ore Deposit of Inner Mongolia, China-Origin, Episodic Mineralization, and Implications;Chao;U.S. Geol. Surv. Circ.,1989
4. Multiple Lines of Evidence for Establishing the Mineral Paragenetic Sequence of the Bayan Obo Rare Earth Ore Deposit of Inner Mongolia, China;Chao,1990
5. Geologic Map of the Bayan Obo Area;Drew;U.S. Geol. Survey I-Map 2057,1990