Josiah Edward Spurr – författare

Geology Of The Aspen Mining District, Colorado, With Atlas

Geology Of The Aspen Mining District, Colorado, With Atlas

Geology Applied to Mining

Geology Applied to Mining

Geology of the Tonopah Mining District Nevada

Geology of the Tonopah Mining District Nevada

Geology Applied to Mining; a Concise Summary of the Chief Geological Principles, a Knowledge of Which is Necessary to the Understanding and Proper Exploitation of Ore-deposits, for Mining men and Students

Geology Applied to Mining; a Concise Summary of the Chief Geological Principles, a Knowledge of Which is Necessary to the Understanding and Proper Exploitation of Ore-deposits, for Mining men and Students

Through the Yukon Gold Diggings A Narrative of Personal Travel

Through the Yukon Gold Diggings A Narrative of Personal Travel

Economic Geology Of The Georgetown Quadrangle (together With The Empire District) Colorado

Economic Geology Of The Georgetown Quadrangle (together With The Empire District) Colorado

Political and Commercial Geology and the World's Mineral Resources

Economic Geology Of The Mercur Mining District, Utah

Political and Commercial Geology and the World's Mineral Resources

Economic Geology Of The Mercur Mining District, Utah

Through the Yukon Gold Diggings

A Narrative of Personal Travel

Through the Yukon Gold Diggings

A Narrative of Personal Travel