The mineral industry of the British empire and foreign countries.
Beryllium (glucinum) and beryl.

APA Citation

Imperial Institute (Great Britain). (1931). The mineral industry of the British empire and foreign countries: Beryllium (glucinum) and beryl. London: H. M. Stationery Off..

MLA Citation

Imperial Institute (Great Britain). The Mineral Industry of the British Empire And Foreign Countries: Beryllium (glucinum) And Beryl. London: H. M. Stationery Off., 1931.

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