Talc from Alto Chapare mining district, Chapare Province, Cochabamba, Bolivia
Bolivia | |
| Petrov, Alfredo (n.d.) Personal Communication. |
| GEOBOL-PNUD, Proyecto Asbesto, March 1977. |
Petrov, Alfredo (n.d.) Personal Communication. | |
| Petrov, Alfredo (n.d.) Personal Communication. |
Petrov, Alfredo (n.d.) Personal Communication. | |
Petrov, Alfredo (n.d.) Personal Communication. |