The Metallurgy of the Non-Ferrous Metals. E-book. Formato PDF William Gowland   -  Forgotten Books, 2017  - 

Much that is not essential and processes which are obsolete have been omitted, while those which are falling into disuse are only brie?y described. In the chapters dealing with gold, silver, copper, and lead special care has been taken to keep pace with the progress which has been made in the metallurgy of these metals, and it is believed that no important modern successful process has been omitted.