449 resultados para Coal mines and mining.
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Mode of access: Internet.
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Paged continuously.
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"This skeleton form of report was framed to assist practical Miners and Mine Owners ... in making a comprehensive report"--T.p.
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At head of title: Imperial mineral resources bureau.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Errata sheet inserted.
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"April 1983."
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Includes index.
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Goldsmiths'-Kress no. 18428.
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Vol. II, pt. I-II, paged continuously.
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Mode of access: Internet.