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At head of title: Imperial mineral resources bureau.

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At head of title: Imperial mineral resources bureau.

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At head of title: Imperial mineral resources bureau.

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At head of title: Imperial Mineral Resources Bureau.

The mineral industry of the British Empire and foreign countries. Statistics, 1920-1922. Copper.

At head of title: Imperial Mineral Resources Bureau.

The mineral industry of the British Empire and foreign countries. Statistics, 1920-1922. Aluminium, including bauxite and cryolite.

At head of title: Imperial Mineral Resources Bureau.

The mineral industry of the British Empire and foreign countries. Statistics, 1919-1921. Petroleum and allied products.

At head of title: Imperial mineral resources bureau.

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At head of title: Imperial Mineral Resources Bureau.

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At head of title: Imperial Mineral Resources Bureau.

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At head of title: Imperial Mineral Resources Bureau.

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At head of title: Imperial Mineral Resources Bureau.

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At head of title: Imperial institute.

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