Laboratory Instructions for Fire Assays of Gold, Silver, and Lead: Mining .
Автор: Walter S. Morley , University of California, Berkeley Dept. of Mining and Metallurgy. Assaying Laboratory, Assaying laboratory, Dept. of mining and metallurgy , California, Berkeley University, 48 стр., издатель: "Книга по Требованию", ISBN: 978-5-8803-0871-2