The mineral industry of the British Empire and foreign countries.
Nitrates /
Imperial Mineral Resources Bureau.

APA Citation

Great Britain. Imperial Mineral Resources Bureau. (1920). The mineral industry of the British Empire and foreign countries. London: H.M.S.O..

MLA Citation

Great Britain. Imperial Mineral Resources Bureau. The Mineral Industry of the British Empire And Foreign Countries. London: H.M.S.O., 1920.

Warning: These citations may not always be complete (especially for serials).