Search U.S. government technical reports digitized or harvested by TRAIL.
Deposits of titanium-bearing ores :by E.P. Youngman.
Mining laws of the Netherland East Indies
Mining laws of the Netherlands
Mining laws of Ethiopia (Abyssinia)
Mining laws of the Republic of Liberia
Mining laws of Denmark and Danish possessions
Mining laws of the Unfederated Malay States
Mining laws of Chosen (or Korea)
Mining laws of Surinam (Dutch Guiana)
Mining laws of the Irish Free State
Mining laws of French Indo-china
Mining laws of British North Borneo