Não informado. (2019). Canadian Mining Journal's Reference Manual & Buyer's Guide. National Business Publications.
Chicago-viite (17. p.)Não informado. Canadian Mining Journal's Reference Manual & Buyer's Guide. Montreal, Canada: National Business Publications, 2019.
MLA-viite (8. p.)Não informado. Canadian Mining Journal's Reference Manual & Buyer's Guide. National Business Publications, 2019.
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