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Автор: J.C.F.Johnson
Год: 2007
Издание:
Книга по Требованию
Страниц: 140
ISBN: 9781406534931
"What has been aimed at is to make "Getting Gold" a compendium, in specially concrete form, of useful information respecting the processes of winning from the soil and the after-treatment of gold and gold ores, including some original practical discoveries by the author. The author's mining experience extends back thirty years."
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