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1913

Covers: Atlas of Coal Resources of the W …

Geologic Atlas

(Covers to) The Coal Resources Of The Wo …

1913

Coal Fields No. 5, Austria. Coal Resourc …

Geologic Atlas

Coal Resources of the World. Austria. Ma …

1913

Coal Fields No. 6, Austria. Coal Resourc …

Geologic Atlas

Coal Resources of the World. Austria. Ma …