The practical study of mining-engineering and the mechanical and metallurgical treatment of ores at the Royal Prussian School of Mines, in Clausthal
New York: Stockholder Job Printing Office, 1867. First edition, 8vo, pp. 7; original terracotta printed wrappers, removed from old paper wrappers; very good. OCLC locates only the Yale and the Geological Survey Office copy. More
