(1) Imperial Mineral Resources Bureau The Mineral Industry of the British Empire and Foreign Countries War Period Arsenic (2) Tungsten Ores
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1939 ◽
Vol 58
(44)
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pp. 973-973
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1940 ◽
Vol 59
(17)
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pp. 287-287
1933 ◽
Vol 52
(18)
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pp. 387-387
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