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- Bureau de Recherches Géologiques et Minières1
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- New Hampshire Dept. of Resources and Economic Development1
- Ontario Dept. of Mines1
- Servicio Geológico de Bolivia1
- The Survey, Williams & Heintz Map Corp.)1
- UNESCO : Bureau de Recherches Géologiques et Minières1
- United States Geological Survey1
- Utah Geological and Mineralogical Survey1
- Ústřední ústav geologický1
