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

At head of title: Imperial Mineral Resources Bureau.

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

At head of title: Imperial Mineral Resources Bureau.

The mineral industry of the British empire and foreign countries. Statistics, 1919-1921. Asbestos.

At head of title: Imperial Mineral Resources Bureau.

The mineral industry of the British empire and foreign countries. Statistics, 1919-1921. Abrasives.

At head of title: Imperial Mineral Resources Bureau.

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

At head of title: Imperial Mineral Resources Bureau.

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

At head of title: Imperial Mineral Resources Bureau.

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

At head of title: Imperial Mineral Resources Bureau.

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

At head of title: Imperial Mineral Resources Bureau.

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

At head of title: Imperial Mineral Resources Bureau.

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

At head of title: Imperial Mineral Resources Bureau.

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, 1919-1921. Fuller's earth.

At head of title: Imperial Mineral Resources Bureau.

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

At head of title: Imperial Mineral Resources Bureau.

The mineral industry of the British empire and foreign countries. Statistics, 1919-1921. Quicksilver.

At head of title: Imperial Mineral Resources Bureau.

Workmen's compensation act of 1915 as amended 1919 ...

At head of title: Commonwealth of Pennsylvania. Department of Labor and Industry.