The mineral industry of the British Empire and foreign countries
Subtitle: War period.  Phosphates.  (1913-1919.)
Publisher: Printed and pub. by H. M. Stationery Off.
Published: 1921
Place of publication: London
Language: eng
Number of pages: 72
Subjects: Phosphates
Notes: At head of title: Imperial Mineral Resources Bureau.

"References to technical literature":p. 67-72.