Columbite-(Fe)-Columbite-(Mn) Series from La Paz, Bolivia
Bolivia | |
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Federico Ahlfeld and Jorge Munoz Reyes: Las Especies Minerales de Bolivia (Banco Minero de Bolivia, 1955) | |
| (1998) International strategic mineral issues summary report: tungsten. Circular 930-O. US Geological Survey doi:10.3133/cir930o |