6 books
Engineer's Valuing Assistant, Being a Practical Treatise on the Valuation of Collieries and Other Mines, with Rules, Formulæ, and Examples
Official Report Upon the Mines, Mining, Metallurgy and Mining Laws, &c., &c
Engineer's Valuing Assistant; Being a Practical Treatise on the Valuation of Collieries and Other Mines with Rules, Formulae, and Examples; Also a Set of Valuation Tables
Engineer's Valuing Assistant
Official report upon the mines, mining, metallurgy and mining laws, c., c. of the Argentine Republic
Engineer's Valuing Assistant; Being a Practical Treatise on the Valuation of Collieries and Other Mines Including Royalties, Leaseholds and