The production of fluorspar and cryolite in 1909, 1911.

Advance chapter from Mineral resources of the United States calendar year 1909, 1911.

Illinois fluorspar /

Includes bibliographical references (p. 34-36).

The mineral industry of the British Empire and foreign countries. Statistics, 1919-1921. Fluorspar.

At head of title: Imperial Mineral Resources Bureau.

The mineral industry of the British Empire and foreign countries. Statistics, 1920-1922. Fluorspar.

At head of title: Imperial Mineral Resources Bureau.

Memoria sobre os vasos murrhinos /

Errata slip.

Special reports on the mineral resources of Great Britain.

v.31 Ball clays -- v.32 Granites of Scotland -- v.33 Synopsis of the mineral resources of Scotland -- v.34 Rock wool -- v. 35 Limestones of Scotland -- v.36 Cambro-Ordovician limestones and dolomites of the Ord and Torran areas, SKye and the Kishorn area, Ross-Shire -- v.37 Limestones of Scotland : chemical analyses and petrography