Average Analyses: Lake Superior Iron Ores: By Grades Shipped with Other Statistical Tables and a Directory of Mine Operators

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American Iron Ore Association., 1955
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Contents

ΟΓαάν Ιηάβχ
4
δυπιπυΐΓυ δ ΙΓοη ΟΓβ δΐαΐίβΐίοβ
38
δΗίριηβηΐβ Γγοπι ΙΙρρβΓ Ιίβ ΡοΓΐβ αικί
45

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