ES117193A1 - Perfeccionamientos en la concentración, por flotación, de las menas de fosforitas y, en general, de todas las de fosfatos.
- Google Patents
Perfeccionamientos en la concentración, por flotación, de las menas de fosforitas y, en general, de todas las de fosfatos.
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ES117193A1930-03-071930-03-07Perfeccionamientos en la concentración, por flotación, de las menas de fosforitas y, en general, de todas las de fosfatos.
ExpiredES117193A1
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