Αδιαφορία Nathaniel Ward δείκτης matte smelting πάλι Μοναξιά μόνο
A new method for continuous recovery of fine copper droplets from copper matte smelting slag via super-gravity - ScienceDirect
Matte Smelting: Its Principles and Later Developments Discussed. with an Account of the Pyritic Processes, Volume 2: Lang, Herbert: 9781147597738: Amazon.com: Books