LIBROS DEL AUTOR: i m varentsov

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  • Manganese Ores of Supergene Zone
    I.M. Varentsov
    The significance of manganese ores is very weil known in cast iron and steel production, as weil as in various types of chemical raw material and agricultural fertilizers. The world industry development in recent years requires their increased production in the vicinity of the metallurgical centers in different regions of the world; high grade mangane...
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    207,37 €