Items where Centre is "British Geological Survey (BGS)" and Year is 1925
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Imperial Mineral Resources Bureau. 1925 The mineral industry of the British Empire and foreign countries : statistical summary (production, imports and exports) 1913-1922. London, UK, HMSO, 402pp. (World Mineral Production).
Imperial Mineral Resources Bureau. 1925 The mineral industry of the British Empire and foreign countries : statistical summary (production, imports and exports) 1921-1923. London, UK, HMSO, 312pp. (World Mineral Production).
Imperial Institute. Mineral Resources Department. 1925 The mineral industry of the British Empire and foreign countries : statistical summary (production, imports and exports) 1922-1924. London, UK, HMSO, 346pp. (World Mineral Production).