1-2 of 2 Books

Official report upon the mines, mining, metallurgy and mining laws, &c., &c. of the Argentine Republic
By Henry Davis Hoskold
Proyect for improving the navigability of the river Uruguay between the river Plate and Concordia
Proyect for improving the navigability of the river Uruguay between the river Plate and Concordia
By Argentina. Dirección General de Obras Hidráulicas