Hofman, H. O. The metallurgy of lead and the desilverization of base Bullion / by H. O. Hofman, professor of metallurgy, Massachusetts Institute of Techonology (Sixth edition, rewritten and enlarged with numerous illustrations and working drawings.).
Cita Chicago Style (17a ed.)Hofman, Heinrich Oscar. The Metallurgy of Lead and the Desilverization of Base Bullion / by H. O. Hofman, Professor of Metallurgy, Massachusetts Institute of Techonology. Sixth edition, rewritten and enlarged with numerous illustrations and working drawings. New York and London : The scientific publishing company, 1901.
Cita MLA (8a ed.)Hofman, Heinrich Oscar. The Metallurgy of Lead and the Desilverization of Base Bullion / by H. O. Hofman, Professor of Metallurgy, Massachusetts Institute of Techonology. Sixth edition, rewritten and enlarged with numerous illustrations and working drawings.